Guest Star: Erin Allin O'Reilly

You are viewing a list of Erin Allin O'Reilly's 2 appearances on The Big Bang Theory.

• 

  The Middle-Earth Paradigm
  Season 1, Episode 6 - Aired October 29, 2007

  The whole gang attends Penny's Halloween party, where Leonard's feelings for Penny come to the fore after her ex-boyfriend Kurt shows up. Leonard's attempts to impress Penny by standing up to Kurt lead to humiliation.

  Appeared as Cheryl
• 

  The Pancake Batter Anomaly
  Season 1, Episode 11 - Aired March 31, 2008

  When Sheldon catches the flu, Leonard flees the apartment to avoid having to care for a needy Sheldon. After Sheldon turns up at the Cheesecake Factory, Penny is left to care of him.

  Appeared as Cheryl