Lasting 12 seasons and reaching thousands and thousands of viewers throughout the globe, The Massive Bang Concept is without doubt one of the most profitable sitcoms of all time. It focuses on a bunch of socially awkward scientists and their interactions with one another and the world round them. Celebrating “geek” tradition and science humor, the present has amassed an enormous following and boasts among the largest celeb visitor appearances of all time.

The Massive Bang Concept
- Launch Date
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2007 – 2018
- Community
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CBS
- Showrunner
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Mark Cendrowski
With actually dozens of well-known visitor appearances and cameos underneath its belt, some are actually unforgettable, like James Earl Jones’ “ring and run” prank on fellow Star Wars actor Carrie Fisher’s dwelling or Wil Wheaton’s recurring function as a darker, egomaniacal, fictionalized model of himself. Different memorable appearances embody Mark Hamill, Stephen Hawking, Stan Lee, and William Shatner.
Right here, we’ve listed 10 different nice celeb appearances in The Massive Bang Concept that you could be effectively have forgotten about.
10
Eliza Dushku
Season 4, Episode 7 – “The Apology Insufficiency”
Eliza Dushku rose to prominence within the ‘90s and ‘00s, starring in various main films, together with True Lies, Flawed Flip, and Jay and Silent Bob Strike Again. She was actually no stranger to tv both, having additionally appeared as Religion within the supernatural drama sequence Buffy the Vampire Slayer (1998–2003) and its spin-off sequence Angel (2000–2003). In 2010, she appeared in The Massive Bang Concept’s Season 7, Episode 4 as Angela Web page, an FBI Particular Agent introduced in to examine Howard’s background earlier than granting him safety entry to work on a brand new challenge.
As Anticipated, Issues Don’t Go to Plan
When interviewing Howard’s buddies to evaluate his character, they’re intimidated by Angela’s seems to be and place of energy, and every, in their very own means, solely makes issues worse for Howard. Raj can solely discover the boldness to speak to her when drunk, Sheldon is way extra excited about his personal experiences with the FBI than in Howard, and Wolowitz seizes the chance to aim to seduce the agent.

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9
Sarah Michelle Gellar
Season 12, Episode 24 – “The Stockholm Syndrome”
Eliza Dushku will not be the one Buffy the Vampire Slayer alum to have guest-starred; Buffy herself, Sarah Michelle Gellar, additionally as soon as appeared. Taking part in herself, she is seen sharing a flight with the principle solid of characters and later attending the identical Nobel Prize ceremony.
Unsurprisingly, Buffy and Sarah Michelle Gellar Are A lot Beloved by the Characters
Leonard, Howard, Sheldon, and Raj share a powerful appreciation for sci-fi, fantasy, ‘nerd’ tradition, and cult tv exhibits, so it’s no shock that they’re big followers of Buffy the Vampire Slayer. Upon discovering Gellar’s presence amongst them, their deep admiration is completely captured by their shocked reactions, nervous power, and awkward makes an attempt to impress her.
8
Elon Musk
Season 9, Episode 9 – “The Platonic Permutation”
Again when Elon Musk was identified extra as a tech innovator than the controversial, headline-grabbing, and politically outspoken persona he’s at present, he appeared as himself within the ninth episode of the ninth season of The Massive Bang Concept. His look continued the pattern of together with visitor stars from the world of science and expertise, following the likes of Stephen Hawking and Apple co-founder Steve Wozniak earlier than him.
Elon Musk Was Working in a Soup Kitchen at a Homeless Shelter
Showing in 2015’s Thanksgiving episode, Howard encounters Musk whereas working within the soup kitchen of a homeless shelter. Whereas working collectively to assist the much less lucky, the 2 bond over their shared curiosity in house journey. Removed from probably the most memorable visitor cameo by a protracted shot, one couldn’t assist however surprise what the response can be like at present, following Musk’s newfound notoriety.
7
Howie Mandel
Season 6, Episode 4 – “The Re-entry Minimization”
Tv persona and actor Howie Mandel appeared within the episode The Re-Entry Minimization, throughout which he shares a flight with Howard, who’s returning dwelling after attaining a lifelong dream of touring to house.
There’s a Hilarious Combine-Up Between ‘Howard’ and ‘Howie’
As Howard arrives on the airport alongside Mandel, he hears a crowd chanting “Howie” as they rush to take photographs. Believing they’re celebrating his return from house, he steps into the limelight and begins to ship a speech, solely to be interrupted by Mandel, who explains they’re there for him. This hilarious mix-up is a chief instance of the present’s sharp humor, the place awkward social blunders and standard tradition collide.
6
Charlie Sheen
Season 2, Episode 4 – “The Griffin Equivalency”
Charlie Sheen was, on the time, starring in Two and a Half Males, one other sitcom from producer Chuck Lorre. In a really temporary cameo, he seems as himself in The Massive Bang Concept at a celebration the place Raj is celebrating his discovery of a planetary object lastly being acknowledged, enthusiastically sharing with everyone that he was going to be in Folks journal. Charlie Sheen— in a self-mocking response to this—then delivered the enduring line, “Yeah, name me while you’re on the duvet.”
Charlie Sheen Is Not a Fan of the Present
In a 2013 interview whereas selling his new present Anger Administration, Sheen’s cameo got here up, and he made it clear he was not a fan. He was quoted as saying it was “silly,” “lame,” and “about lame folks,” additionally referring to it as “a chunk of s**t.” He then went on to state that the present wouldn’t have even been potential with out Two and a Half Males paving the best way for it.
5
Adam West
Season 9, Episode 17 – “The Celebration Experimentation”
Following a traumatic childhood incident by which he was falsely led to consider that Batman can be attending his party, Sheldon admits he has by no means been in a position to take pleasure in a party since. In a candy and considerate gesture, his buddies handle to rent iconic actor Adam West, finest identified for his portrayal of Batman within the ’60s, to attend his celebration.
Adam West Isn’t the Solely Visitor Cameo
Issues get even higher for Sheldon when he receives a video name from his hero, Professor Stephen Hawking, who joins them in singing “Comfortable Birthday.” Hawking made quite a few appearances on the present all through its run, showing in a complete of seven episodes.
4
Nathan Fillion
Season 8, Episode 15 – “The Comedian E-book Retailer Regeneration”
Nathan Fillion is finest identified for enjoying the main function of Captain Malcolm “Mal” Reynolds in Firefly and its movie continuation, Serenity. He seems in The Massive Bang Concept as himself, consuming at a deli and making an attempt to thoughts his enterprise. This proves to be more durable than anticipated when he’s noticed by Raj and Leonard.
An Awkward Encounter
After being noticed, Nathan Fillion initially denies he’s an actor, however after being questioned, he admits they’re proper. By this level, although, Raj has grown suspicious and pushes Fillion to show his id by answering questions based mostly on his Firefly character. Your complete encounter is each awkwardly humorous and endearingly nerdy, demonstrating The Massive Bang Concept’s expertise for using its celeb company.
3
Kevin Smith
Season 12, Episode 16 – “The D&D Vortex” and Season 8, Episode 20 – “The Fortification Implementation”
Kevin Smith is a geek tradition icon. The comedian e book fanatic and director of cult classics like Clerks and Mallrats was the proper match for The Massive Bang Concept. At first, it’s simply his immediately recognizable voice we hear on the present in Season 8, the place he seems as himself on Wil Wheaton’s podcast and affords Penny an audition for a brand new Clerks film.
Kevin Smith Returned in Season 12
In what is kind of presumably probably the most celebrity-filled episode of the present’s historical past, Kevin Smith returned to affix Penny, Amy, and Bernadette, together with William Shatner, Wil Wheaton, Joe Manganiello, and Kareem Abdul-Jabbar, for a recreation of Dungeons & Dragons. In all probability most memorable for Shatner lastly showing on the present after years of hypothesis, it’s good to witness Smith injecting loads of humor himself, hilariously asking Shatner to place a greenback within the Star Trek jar after he says he’s going to go all Wrath of Khan on them.
2
Christopher Lloyd
Season 10, Episode 10 – “The Property Division Collision”
The legendary character actor, identified for his roles in Taxi, One Flew Over the Cuckoo’s Nest, Who Framed Roger Rabbit, and, in fact, Again to the Future, appeared in The Massive Bang Concept again in 2016. He performs an aged man named Theodore, who shares Sheldon’s room after Sheldon sublets it to him to spite Leonard.
Lloyd Brings His Trademark Eccentricity
Theodore is surprisingly endearing and amusingly oblivious to the drama that unfolds round him. With the proper mix of laid-back, deadpan supply and Lloyd’s trademark eccentricity, he provides an virtually surreal component to the dynamics as he nonchalantly goes about his enterprise, providing quirky recommendation that proves to be much more helpful than anticipated.

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1
Billy Bob Thornton
Season 8, Episode 7 – “The Misinterpretation Agitation”
Hollywood icon Billy Bob Thornton performed a profitable however socially awkward physician who errors Penny’s flirtatious gross sales approach for a real connection. After discovering Penny is with Leonard, he lures him and his buddies right down to his basement, stuffed with sci-fi memorabilia, locks them in, and goes to pursue Penny as soon as extra. Issues take an much more weird flip as he falls for Amy en route and later for Bernadette.
Billy Bob Thornton’s Look Was Miraculously Saved Underneath Wraps
In an age the place spoilers freely leak lengthy earlier than episodes debut, the Oscar winner’s look was one way or the other efficiently saved a secret, making the shock all of the extra rewarding. Audiences and critics responded positively to his layered portrayal of a deeply entertaining however confused particular person.