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TheHidden Figuresstar played a DMV worker who meets Sheldon and the gang.

Eliza Dushku

Eliza Dushku dropped byThe Big Bang Theory’sfourth seasonin 2010.

The Convention Conundrum

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TheBring It Onstar played FBI Special Agent Angela Page, an agent who pays Rajesh a visit.

Judy Greer

Judy Greer popped up onThe Big Bang Theoryin 2010, appearing in the show’sthird season.

The busy actress appeared as a cosmological physicist named Dr. Elizabeth Plimpton.

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CBS

Stan Lee

Geek dreams were fulfilled when Stan Lee appeared in anepisode ofThe Big Bang Theoryin 2010.

The comic book legend played himself and participates in an odd encounter with the group at his home.

Danica McKellar

Danica McKellar joinedThe Big Bang Theoryforone episodein 2010.

THE BIG BANG THEORY

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TheWonder Yearsalum played Abby, a woman who gets involed with Raj.

Neil DeGrasse Tyson

Neil deGrasse Tyson brought his science chops toThe Big Bang Theoryin 2010.

The acclaimed astrophysicist and cosmologist appeared as himself in the fourth season.

THE BIG BANG THEORY

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George Takei

The Big Bang Theorygot a visit from George Takei in 2010.

TheStar Trekactor joined thefourth seasonas himself, appearing in a fantasy.

Billy Bob Thornton

Billy Bob Thornton signed on for one2014 episodeofThe Big Bang Theory.

THE BIG BANG THEORY

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The Oscar winner played Dr. Oliver Lorvis, a urologist.

Buzz Aldrin

Buzz Aldrin dropped by thesixth seasonofThe Big Bang Theoryin 2012.

The astronaut played himself, talking to kids about his trip to the moon.

THE BIG BANG THEORY

Robert Voets/CBS

Bill Nye

Bill Nye found his way toThe Big Bang Theoryin 2013.

The Science Guy appeared as himself in the show’sseventh season, spending some time with the gang.

The inventor played himself, meeting Howard while volunteering.

THE BIG BANG THEORY

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Adam West

Even Batman got in on theBig Bang Theoryfun.

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THE BIG BANG THEORY

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The Misinterpretation Agitation

Michael Ansell/CBS

The Holographic Excitation

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The Proton Displacement

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The Platonic Permutation

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The Celebration Experimentation