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Cast
Main Characters
Leonard Hofstadter - Sheldon Cooper - Penny - Howard Wolowitz - Rajesh Koothrappali - Bernadette Rostenkowski-Wolowitz - Amy Farrah Fowler - Stuart Bloom
Minor Characters
Althea - Stephanie Barnett - Mary Cooper - Eric Gablehauser - Beverly Hofstadter - Zack Johnson - Priya Koothrappali - Mrs. Koothrappali - V. M. Koothrappali - Barry Kripke - Kurt - Mike Massimino - Dimitri Rezinov - President Siebert - Wil Wheaton - Leslie Winkle - Mrs. Wolowitz
Guest Appearances
Buzz Aldrin - LeVar Burton - Summer Glau - Brian Greene - Stephen Hawking - Stan Lee - Mike Massimino - Leonard Nimoy - Katee Sackhoff - Charlie Sheen - George Smoot - Brent Spiner - George Takei - Neil deGrasse Tyson - Wil Wheaton - Steve Wozniak
Extras
George Cooper - Sheldon Cooper's grandmother - Floyd Hofstadter - Michael Hofstadter
Staff
Actors
Johnny Galecki - Jim Parsons - Kaley Cuoco - Simon Helberg - Kunal Nayyar - Mayim Bialik - Melissa Rauch - Kevin Sussman - Sara Gilbert - John Ross Bowie - Carol Ann Susi - Laurie Metcalf - Wil Wheaton - Christine Baranski - Brian Wade - Mark Harelik - Sara Rue - Aarti Mann
Creators
Mark Cendrowski - Chuck Lorre - Bill Prady - Richard Rosenstock
Directors
James Burrows - Mark Cendrowski
Producers
Chuck Lorre - Bill Prady - Richard Rosenstock
Writers
Chuck Lorre- Bill Prady - Richard Rosenstock
Science Consultant
David Saltzberg

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