A blend of brilliance and humor made Stephen Hawking's cameos unforgettable

According to his daughter, Stephen Hawking defied early doubts about his intellect

Lucy Hawking details what it was like to be the daughter of the famed cosmologist and what his life looked like from her eyes. Among the anecdotes was Stephen's enjoyment of being on "The Simpsons" because production gave him a wheelchair with helicopter blades.

With his dry wit, Stephen Hawking warns of AI dangers and explains imaginary time

In this comedic interview with John Oliver, Stephen Hawking discusses his groundbreaking work in theoretical physics, his views on AI, and Oliver's chances of dating Charlize Theron in the multiverse—all with his trademark voice and humorous tone.

How Stephen Hawking’s voice became iconic

Stephen Hawking relied on a voice synthesizer after losing the ability to speak due to complications with ALS. Despite technological advances, he refused to change the "Perfect Paul" voice, making it a cornerstone of his public identity.

Despite his disability, Stephen Hawking reshaped our understanding of black holes

His theoretical work—especially on black holes emitting radiation, now known as Hawking radiation—challenged long-held ideas. He also brought complex physics to the public through bestselling books like "A Brief History of Time."

The speech software's origins at MIT led to Hawking's trademark voice being American

Stephen Hawking's trademark voice is called "Perfect Paul," but it mimics Dennis Klatt, an American researcher at MIT who developed the speech synthesis technology. Klatt used his voice during this development, which was immortalized through Hawking.

Using scientific bets, Hawking challenged and highlighted major physics ideas

Hawking famously placed wagers on high-stakes questions in theoretical physics—such as the Higgs boson—for fun and to draw attention to science. When Hawking lost a bet about Cygnus X-1 being a black hole, he paid up with a magazine subscription.

Stephen Hawking's final message

Famous cosmologist Stephen Hawking—who lived for half a century after being diagnosed with Lou Gehrig's disease—delivered a final speech just before he died in 2018. In the video, Hawking talks about the importance of science and reason in...

The best celebrity cameos on 'The Simpsons'

As the show became a pop culture sensation in the late '80s, it began attracting celebrities eager to get in on the fun. This list ranks some of the best of those appearances, including Meryl Streep, Paul McCartney, and Dustin Hoffman.

Stephen Hawking's children's books help make science fun and accessible for kids

Stephen Hawking co-wrote "George’s Secret Key to the Universe" with his daughter, Lucy, to introduce young readers to big questions about the cosmos. In the first book, the protagonist rides a comet and discovers that black holes aren’t black.

Stephen Hawking's condition explained

Diagnosed with ALS at 21 and told he had two years to live, Stephen Hawking went on to change our understanding of black holes and the universe, living 55 more years and defying every expectation.

Stephen Hawking's early rowing days shaped the bold persona for which he became known

Before gaining fame as a physicist, Hawking was a coxswain at Oxford, where the sport helped him find his social footing and develop leadership skills, even as his motor neuron disease began to emerge.

Watch Hank Azaria perform classic sports rants as 'Simpsons' characters

The actor has voiced some of the show's most beloved characters, including Moe Szyslak and Chief Wiggum. In 2025, he joined "The Rich Eisen Show" and used those voices to reimagine some of the sport's world's most ridiculous speeches.

Hawking suggested studying black holes could reveal truths about the universe's start

After predicting black holes could evaporate and before undergoing a tracheotomy, Stephen Hawking conducted interviews in his voice, explaining phenomena like black holes and the Big Bang. In this clip, he explains how curiosity drives humans to become “masters of the universe.”

English cosmologist Stephen Hawking (1942-2018) jokes about alien sightings

"I am discounting the reports of UFOs. Why would they appear to only cranks and weirdos?"

Winning a Steve Martin look-alike contest led Bill Nye to pursue comedy

Doing impressions helped Nye realize he enjoyed making people laugh, and he pursued stand-up and comedy writing gigs while working at Boeing after college. On October 3, 1986, he left his engineering job to pursue a full-time career in the entertainment industry.

'The Theory of Everything' depicts Stephen Hawking through Jane Wilde’s eyes

Stephen Hawking credits Jane Wilde, his first wife, for giving him “something to live for” after his ALS diagnosis. This biographical drama of Hawking’s life, adapted from her memoir, details their relationship and the effects his illness and success in physics had on their marriage.

Stephen Hawking on the need to explore space

Should we be content with being cosmic couch potatoes? In this interview, the late Professor Stephen Hawking lays out the case for continued and increased human space exploration, despite its cost and challenges.

The sophisticated math jokes of 'The Simpsons'

"The Simpsons" has always been a slyly sophisticated show and has featured more than a few references to complex mathematical concepts. That's largely due to its writers' room, which has featured more than one writer who studied math before transitioning to comedy.

Bill Nye received a star on the Hollywood Walk of Fame in 2025

The Hollywood Chamber of Commerce awarded its 2,821st star to Nye for his "dedication in making science accessible and entertaining for all ages through his iconic educational show." Former "Almost Live!" colleagues Joel McHale and Ross Shafer spoke in Nye's honor during the ceremony.

The Big Bang became physically plausible thanks to Stephen Hawking’s thesis

Stephen Hawking's PhD thesis mathematically showed that singularities—points of no volume and infinite density—are an expected feature of nature. It laid the theoretical groundwork for a model of the universe where everything originates from a single point.

No one showed up to the party for time travelers organized by Stephen Hawking

In 2009, Hawking hosted a reception but only sent out invitations afterward, hoping that time travelers from the future would attend and prove time travel possible. He later joked it was "experimental evidence" that time travel doesn’t exist.

Stephen Hawking's biggest discovery—Hawking radiation—came from a major mistake

Hawking radiation may not have been discovered without Jacob Bekenstein first convincing Stephen Hawking that black holes follow the laws of thermodynamics. The graduate student showed that black holes could shrink, setting the stage for Hawking's most significant contribution.

Listen to the audiobook version of 'A Brief History of Time'

First published in 1988, Stephen Hawking's most famous novel has sold more than 25 million copies in 40 languages. Through non-technical terminology, Hawking discusses the nature of space and time, general relativity, quantum mechanics, gravity, black holes, and cosmology.

What Stephen Hawking said about time travel

When renowned theoretical physicist Stephen Hawking did not rule out the possibility of time travel in his posthumous book Brief Answers to the Big Questions, many hopefuls got excited. But, unfortunately for them, Hawking believed that yet-to-be discovered laws of physics will prove time travel impossible. This piece outlines some practicalities about the speed of light and wormholes that lend way to Hawking’s prediction.

One actor made a career out of playing Mark Twain

Hal Holbrook toured in the one-man show “Mark Twain Tonight!” for over six decades. In the performances, Holbrook wore Twain’s iconic white suit and offered witticisms similar to Twain’s famous lectures. Holbrook won a Tony Award in 1966 for a Broadway run of the show.

Defying the odds, Stephen Hawking outlived his ALS diagnosis by over 50 years

When diagnosed with ALS, Stephen Hawking was given two years to live. However, he survived with the progressive neurodegenerative disease for over 50 years, highlighting the disease's variability and complexity.

Read about the nine depictions of Nikola Tesla in media through 2020

Portrayals include comedic takes, like John C. Reilly's performance in Comedy Central's "Drunk History" series, and more serious interpretations, like Nicholas Hoult's performance in Alfonso Gomez-Rejon’s historical drama, "The Current War."

Watch Bill Nye's debut as the 'Science Guy' on 'Almost Live!'

Knowing that Nye explained scientific concepts as a volunteer at the Pacific Science Center, host Ross Shafer suggested Nye perform scientific demonstrations to fill the time left by a canceled guest. "You could be, like, Bill Nye the Science Guy," said Shafer.

'Pioneering is never done in front of cheerleaders urging on a roaring grandstand of popular approval.'

- "Star Trek" actor George Takei (1937-present)

Dr. Martin Luther King Jr. was an avid fan of Star Trek

Dr. King praised the show’s vision of an integrated future and convinced African-American actress Nichelle Nichols to remain on the show, arguing her role offered a rare, powerful image of racial equality on American television.

The best episodes of 'The Simpsons,' ranked

In its almost four decades on the air, "The Simpsons" has played a role in shaping the arc of American comedy. This list from The Ringer ranks the show's episodes that played the biggest role in that process, featuring exemplary scripts from Conan O'Brien, Greg Daniels, and more.

Hitchcock regularly made cameos in his own films

Long before Tarantino was born, Hitchcock was casting himself in his movies’ bit parts, allowing careful audience members to find the director walking through the fictional world he’d created. The history behind that decision was an accident.

Steve Martin and Robin Williams once starred in Samuel Beckett's 'Waiting for Godot,' one of the most well-regarded examples of the existential movement called 'Theater of the Absurd.'

Watch every episode of 'Bill Nye the Science Guy'

Each features one scientific topic alongside demonstrations, fake commercials, a song parody with science-themed lyrics, and bloopers. Other segments include conversations with experts, exhibiting experiments that can be done at home, and trips to locations beyond "Nye Laboratories" to highlight real-world applications.

Before it was a popular book, 'A Hitchhiker's Guide to the Galaxy' began as a radio series

The science-fiction comedy began as a radio play on BBC Radio 4, broadcast between 1978 and 1980. The first novel appeared in 1979; two years later, it was adapted for television.

Watch an episode of 'Ray Bradbury Theater,' the sci-fi writer's '80s HBO show, starring a young Jeff Goldblum.

One man provides temporary vocals for nearly every character on 'The Simpsons'

Early in the production process, voice actor Chris Edgerly voices hundreds of characters so animators can create preliminary sketches. In this interview, he explains how he learned to mimic the characters' unique voice and tics.

Satirists sometimes use ironic personas

Satirists often embody a character to mock the kind of person who would believe what they argue are ridiculous ideas. One famous example was Stephen Colbert on “The Colbert Report,” who satirized right-wing pundits like Bill O’Reilly through a bombastic persona. When O’Reilly asked whether that meant he was owed money, Colbert responded with more satire: “There’s a difference between imitation and emulation … If you imitate someone, you owe them a royalty check. If you emulate them, you don’t.”

Conan's 2000 commencement speech offers comfort and humor to young Harvard graduates

In the spring of 2000, famous late-night talk show host and comedian Conan O'Brien gave a hilarious, thoughtful speech to the graduating class at Harvard, where he graduated from in 1985. He warns that once adult life begins, any stupid mistakes made by a Harvard grad will be severely mocked. He also recounts his post-grad failures and how important they were in his success. The speech has been noted ever since as a classic example of both wisdom and foolishness.

Ray Bradbury said Steven Spielberg was 'one of the most incredible young talents that's ever come into the world.'

Hawking radiation shows black holes slowly evaporate through quantum effects.

Hawking radiation is Stephen Hawking's theoretical prediction that black holes emit radiation and eventually evaporate. Applied to known black holes, their radiation is so weak that it would take vastly longer than the current age of the universe for them to disappear.

Bob Hope's radio shows brought stand-up to the masses

Bob Hope’s 1930s variety shows featured comedic monologues. Unlike the tightly scripted and evergreen sets of vaudeville, Hope’s monologues leaned into topical and political humor, sometimes to the disapproval of his network.

Mark Twain was an early influence on stand-up

The writer’s live lectures looked a lot like modern stand-up comedy specials. Twain’s world tour in the 1890s featured 90-minute performances in which he stood alone on the stage, delivering long, comedic monologues with his hand perched on his chin.

Auditions for the US adaptation of 'The Office' included many now-famous actors

When NBC decided to adapt "The Office" for American audiences, they auditioned in several comic character actors, including Seth Rogen, Bob Odenkirk, Kathryn Hahn, and Adam Scott. Though those actors didn't land the parts, they did end up with major roles in other critically-acclaimed movies and TV shows, including "Knocked Up," "Abigail All Along," "Better Call Saul," and "Severance."

Carl Sagan, the host of 'Cosmos,' gave Bill Nye advice on his future show

Originally wanting to lean into his engineering background to explain the workings of objects such as bicycles and bridges, Nye ran his idea past his former professor at a college reunion. Sagan told him that children resonated with pure science, not technology, altering the show's future topics.

See an analysis of the similarities between the characters in 'Silicon Valley' and the real people who inspired them

The HBO show "Silicon Valley" follows the story of an engineer who is trying to get his startup to take off in Silicon Valley. While one tech CEO said the show is like a documentary, many speculate the show is based on real life tech figures like Mark Zuckerberg and Peter Thiel.

A 'Simpsons' writer on the show's inadvertent predictions

Some have noted that "The Simpsons" has accurately anticipated a number of events years before they happened. In this interview, showrunner Al Jean explains how these unintentional predictions came about and why he believes the events were not so much visions of the future as educated guesses.

A low-budget, Seattle-based comedy show launched Bill Nye's on-camera career

"Almost Live!" began in 1984 as a Sunday evening talk show before evolving into a sketch comedy show that served as the lead-in for "Saturday Night Live" on NBC's Seattle affiliate station. Besides Nye, TV stars Joel McHale and Lauren Weedman were regular cast members.

The Lucasian Chair is among the most prestigious academic positions in science

Once held by icons like Newton, Dirac, and Hawking, the position was founded in 1663. "Star Trek" imagined the Lucasian Chair’s future holder as the android Data, cementing its mythos across scientific and science fiction realms.

Bill Nye served as a lab assistant in the 'Back to the Future' animated series

Set in an alternate timeline after the conclusion of "Back to the Future Part III," the series starred Jules and Verne—the children of Dr. Emmett Brown and Clara. Each of its 26 episodes concluded with a live-action segment in which Bill Nye performed an experiment related to that episode.