The Big Bang Theory: Season 2 Episode 23: The Monopolar Expedition
Starring: Johnny Galecki, Jim Parsons, Kaley Cuoco, Simon Helberg, Kunal Nayyar, Carol Ann Susi
Length: 21 minutes
On Air Date: 23 Jun 2009
The Big Bang Theory: S02E23 Description: Penny gets upset when she finds out Leonard and the guys plan to work at the North Pole for the summer.