ByStephen Adamson, writer at
I love the game. I love the hustle. MP Staff Writer and Retired Rapper. Twitter: @_StephenAdamson
Stephen Adamson

If you're a fan of The Big Bang Theory or sitcom cameos, this list of guest stars on the show over the years will make you reminisce. Not only does the show deliver laughs, but it also delivers high profile actors, celebs, and geek icons seemingly on a weekly basis.

Check out these 19 Big Bang cameos below...

1. Bill Nye

Episode: "The Proton Displacement" Season 7, Episode 7

Why this was a good cameo: Bill Nye the Science Guy is a world renowned scientist and celebrity, so yeah, good choice for a cameo.

2. Buzz Aldrin

Episode: "The Holographic Excitation" Season 6, Episode 5

Why this was a good cameo: He went to space. Nuff said.

3. Steve Wozniak

Episode: "The Cruciferous Vegetable Amplification" Season 4, Episode 2

Why this was a good cameo: Woz was Steve Jobs' right-hand man and the nuts-and-bolts guy behind the creation of Apple. He deserves this.

4. Charlie Sheen

Episode: "The Griffin Equivalency" Season 2, Episode 4

Why this was a good cameo: Chuck Lorre probably tapped Sheen from Two and a Half Men for this cameo, but it's good regardless. You can never go wrong with a Charlie Sheen guest appearance.

5. Neil deGrasse Tyson

Episode: "The Apology Insufficiency" Season 4, Episode 7

Why this was a good cameo: Neil deGrasse Tyson has become somewhat of a legend in the scientific world - and just in general as well - especially with the release of his show, Cosmos. His thought leadership is incredibly strong and real.

6, 7. George Takei and Katee Sackhoff

Episode: "The Hot Troll Deviation" Season 4, Episode 4

Why these two were good: George Takei is a massive social media superstar at this point and Katee Sackhoff carries her own fan-base to the show as well.

8. Summer Glau

Episode: "The Terminator Decoupling" Season 2, Episode 17

Why this was a good cameo: The nod to the Sarah Connor Chronicles and an entire Terminator theme to the episode is perfect.

9. Brent Spiner

Episode: "The Bakersfield Expedition" Season 5, Episode 5

Why this was a good cameo: I actually got a chance to meet this man on the set of the second Independence Day film. He was nice. That's why I think this cameo was good.

10. Stan Lee

Episode: "The Excelsior Acquisition" Season 3, Episode 16

Why this was a good cameo: Marvel.

11. & 12. James Earl Jones and Carrie Fisher

Episode: "The Convention Conundrum" Season 7, Episode 14

Why this was a good cameo: There has to be a considerable amount of crossover in the Star Wars fandom and TBBT.

13. Bob Newhart

Episodes: "The Proton Resurgence," "The Proton Displacement," "The Proton Transmogrification" Seasons 6 and 7

Why this was a good cameo: Not even sure if this necessarily qualifies as a cameo since he had repeat performances, but he's the man regardless so I decided to include him on the list.

14. Leonard Nimoy (R.I.P.)

Episode: "The Transporter Malfunction" Season 5, Episode 20

Why this was a good cameo: May Spock forever Rest in Peace.

15. Stephen Hawking

Episode: "The Hawking Excitation" Season 5, Episode 21

Why this was a good cameo: Dedicating an entire episode to potentially one of the smartest humans on the planet is never a bad move.

16. Judy Greer

Episode: "The Plimpton Stimulation" Season 3, Episode 21

Why this was a good cameo: Classic actress and, as you may have noticed, a lot of these cameos skewed towards male performances. Good to see some ladies representing!

17. Nathan Fillion

Episode: "The Comic Book Store Regeneration" Season 8, Episode 15

Why this was a good cameo: The Castle actor was a good fit for the show.

18. Brian Greene

Episode: "The Herb Garden Germination" Season 4, Episode 20

Why this was a good cameo: Brainiac.

19. Jessica Walter

Episode: "The Benefactor Factor" Season 4, Episode 15

Why this was a good cameo: She brought a different style of humor and sternness that worked perfectly on the show.


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