The Big Bang Theory: Season 4 Episode 18: The Prestidigitation Approximation
Starring: Johnny Galecki, Jim Parsons, Kaley Cuoco, Simon Helberg, Kunal Nayyar, Carol Ann Susi
Length: 21 minutes
On Air Date: 4 Aug 2011
The Big Bang Theory: S04E18 Description: Priya forces Leonard to choose between a relationship with her or a friendship with Penny. A magic trick by Howard has Sheldon fooled.