Where To Stream The Big Bang Theory Season 2 Episode 20
The Hofstadter Isotope
- Aired April 13, 2009
- 30 Min
- Rated 8.0
- Number 71 Of 279 Rated Episodes
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.