Picture 24 / 69
![Picture 24 / 69](/./images/uploads/2/562874a015eaa8f1ce16f6.jpg)
The Big Bran Hypothesis
Season 1, Episode 2 - Aired October 1, 2007
Leonard hopes to make a good impression with Penny by volunteering to sign for a package of hers. When Leonard and Sheldon move the package to her apartment, Sheldon is disturbed by her apparent lack of tidiness.