Season 1 · Episode 17 · Overall #17
The Tangerine Factor
Aired May 19, 2008 Directed by Mark Cendrowski Written by Story by : Chuck Lorre & Bill Prady | Teleplay by : Lee Aronsohn & Steven Molaro
About This Episode
Leonard and Penny finally kiss, sparked by an experiment involving cats and quantum theory. The first season ends with real romantic possibility.
📺
Video coming soon
Commentary and analysis coming soon