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The Big Bang Theory
The Big Bang Theory
The Hofstadter Isotope (2x20)
Air date: Apr 13, 2009
When a fellow comic book enthusiast hits on Penny it leads to Leonard and Howard going to a bar's on Ladies' Night.
Rank
#2
Premiered
: Sep 2007
Episodes
: 279
Followers
: 54,4k
Ended
CBS
Thursday at 20