The Big Bang Theory: Season 2, Episode 23 The Monopolar Expedition (11 May 2009)

More at IMDbPro » The Big Bang Theory: Season 2, Episode 23 The Monopolar Expedition (11 May 2009) TV Episode  -  21 min  -  Comedy 8.3 Your rating:   9/10   Ratings: 8.3/10 from 761 users   Reviews: 1 user | 1 critic Penny gets upset when she finds out Leonard and the guys plan to work at the North Pole for the summer. Director: Mark Cendrowski Writers: Chuck Lorre (creator), Bill Prady (creator), 2 more credits » Stars: Johnny Galecki, Jim Parsons, Kaley Cuoco | See full cast and crew