The Big Bang Theory – S02 E20 : The Hofstadter Isotope

The Big Bang Theory
2
  •   1
  • Genre: Comedy
  • Running time: 20 min
  • Premiere: 13.04.2009

A fellow comic book enthusiast's hitting on Penny leads to Leonard and Howard going to a bar's Ladies' Night.

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Cast

Johnny Galecki
as Leonard Hofstadter
Jim Parsons
as Sheldon Cooper
Kaley Cuoco
as Penny
Simon Helberg
as Howard Wolowitz
Kunal Nayyar
as Rajesh Koothrappali
Melissa Rauch
as Bernadette Rostenkowski
Mayim Bialik
as Amy Farrah Fowler
Kevin Sussman
as Stuart Bloom
Laura Spencer
as Emily Sweeney
Aarti Mann
as Priya Koothrappali
Kate Micucci
as Lucy
Laurie Metcalf
as Mary Cooper
Sara Gilbert
as Leslie Winkle
John Ross Bowie
as Barry Kripke
Brian George
as V.M. Koothrappali
Travis Schuldt
as Eric
Octavia Spencer
as Octavia
Michael Trucco
as David Underhill
Summer Glau
as Self
Jodi Lyn O'Keefe
as Mikayla
Lewis Black
as Professor Crawley
Elizabeth Bogush
as Catherine Millstone
Yeardley Smith
as Sandy
Julio Oscar Mechoso
as Officer Hackett
Judy Greer
as Elizabeth Plimpton
Steve Wozniak
as Self
George Takei
as Self
Eliza Dushku
as Angela Page
Rick Fox
as Glenn
Jessica Walter
as Mrs. Latham
Kimberly Kevon Williams
as Vicki
Andrew W. Walker
as Mike
Emma Degerstedt
as Emma
Peter Onorati
as Angelo
Brooke D'Orsay
as Christy Vanderbel
Brian Patrick Wade
as Kurt
Michael Hyatt
as Charlotte
Valerie Azlynn
as Alicia
Oliver Muirhead
as Professor Laughlin
Danica McKellar
as Abby
Erin Allin O'Reilly
as Cheryl
James Hong
as Chen
Sherry Weston
as Dance Instructor
Joel Brooks
as Professor Goldfarb
Blake Berris
as Kevin
Courtney Ford
as Alice
Allen Nabors
as Doug
Rachel Cannon
as Patty

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