Starring :

Johnny Galecki ... Leonard Hofstadter (40 episodes, 2007-2009)
Jim Parsons ... Sheldon Cooper (40 episodes, 2007-2009)
Kaley Cuoco ... Penny (40 episodes, 2007-2009)
Simon Helberg ... Howard Wolowitz (40 episodes, 2007-2009)
Kunal Nayyar ... Rajesh Koothrappali / ... (40 episodes, 2007-2009)

Director :

Chuck Lorre
Bill Prady

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