![The Big Bang Theory Season 1 Episode 9 The Big Bang Theory Season 1 Episode 9](https://image.tmdb.org/t/p/w185/zqAL2rav7Tg8uwDtLurqZVN3mtr.jpg)
The Big Bang Theory Season 1 Episode 9
When they’re invited to present at a physics conference, Sheldon’s reluctance to share the credit leads to a tiff between him and Leonard, and Penny’s intervention only exacerbates the situation.
Serie: The Big Bang Theory
Director: Bill Ghaffary, Joel Murray
Guest Star: Howard Chan, Talbott Lin