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The Big Bang Theory

S2-E20 The Hofstadter Isotope

S2-E20 The Hofstadter Isotope



Penny catches the eye of comic-book shopkeeper Stuart, and Leonard is devastated when she gives serious consideration to dating her new admirer. Desperate for help, Leonard enlists Sheldon to discredit his love rival by preying on his obsession with Batman. Johnny Galecki, Kaley Cuoco and Kevin Sussman star.

Cast & Crew

Leonard Hofstadter Johnny Galecki
Penny Kaley Cuoco
Sheldon Cooper Jim Parsons
Howard Wolowitz Simon Helberg
Raj Koothrappali Kunal Nayyar
Stuart Kevin Sussman
Director Mark Cendrowski
Writer Dave Goetsch
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