The Big Bang Theory

Season 2 Episode 20

The Hofstadter Isotope

Aired Thursday 8:00 PM Apr 13, 2009 on CBS
out of 10
User Rating
444 votes

By Users

Write A Review

Episode Summary

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

Who was the Episode MVP ?

Episode Discussion

Join the discussion of this episode Episode Discussion

Trivia, Notes, Quotes and Allusions

See All Trivia, Notes, Quotes and Allusions Trivia & Quotes