The Big Bang Theory - Season 2 - The Classified Materials Turbulence (Episode 22)
Plot: Penny's second date with Stuart sees her making a comment that gives Leonard new hope for a relationship with her. Wolowitz realizes there's a crucial error in a NASA project he's working on
Johnny Galecki
Jim Parsons
Kaley Cuoco
Simon Helberg
Kunal Nayyar
Kevin Sussman
Travis Davis
Robert Clotworthy
Mark Cendrowski
Chuck Lorre
Bill Prady
Steven Molaro
Lee Aronsohn