The Big Bang Theory Season 2 Episode 20 : The Hofstadter Isotope

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

NameThe Big Bang Theory Season 2 : The Hofstadter Isotope
Air DateApril 13th, 2009
GenreComedy
NetworkCBS
Production CompaniesChuck Lorre Productions, Warner Bros. Television
WriterDavid Goetsch
DirectorMark Cendrowski
Guest StarKevin Sussman
Plot Keywordsnerd, geek, friends, scientist, science, sitcom
Kaley Cuoco
Kaley Cuoco
Penny
Johnny Galecki
Johnny Galecki
Leonard Hofstadter
Jim Parsons
Jim Parsons
Sheldon Cooper
Simon Helberg
Simon Helberg
Howard Wolowitz
Kunal Nayyar
Kunal Nayyar
Rajesh Koothrappali

Other Episodes