The Hofstadter Isotope Edit
The Big Bang Theory › Season 2 › Episode 20 Edit this episode

The Hofstadter Isotope Edit

Aired on: Mon Apr 13 2009 Edit

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

Starring

Johnny Galecki, Jim Parsons, Kaley Cuoco, Simon Helberg, Kunal Nayyar, Melissa Rauch, Mayim Bialik

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