THE BIG BANG THEORY “The Hofstadter Isotope” Season 2 Episode 20

Take a first look at THE BIG BANG THEORY‘s Season 2 Episode 20 “The Hofstadter Isotope” airing this Monday April 13 2008.

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Episode Synopsis: THE BIG BANG THEORY “The Hofstadter Isotope” Season 2 Episode 20 – While a fellow comic book-loving pal of the guys romances Penny, Leonard and Wolowitz venture out into the world of “Ladies’ Night” at a local bar, on THE BIG BANG THEORY, Monday, April 13 (8:00-8:30 PM, ET/PT) on the CBS Television Network.