Season 2 · Episode 20 of 23
Aired Apr 13, 2009
The Hofstadter Isotope
Mon, Apr 13, 2009
·
20 min
Streaming on Netflix, Hulu, HBO Max, Disney+ + 5 more
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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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Airs
Mon, Apr 13, 2009
20 min
Show
The Big Bang Theory
279 episodes
Episode
S2 · E20
in The Big Bang Theory