The Big Bang Theory
Smart is the new sexy.
Physicists Leonard and Sheldon find their nerd-centric social circle with pals Howard and Raj expanding when aspiring actress Penny moves in next door.
Cast spotlight
Jump into full cast pages for bio, socials, and recent work.
Season 1
17 episodes
Premiered Sep 24, 2007
Season 2
23 episodes
Premiered Sep 22, 2008
Season 3
23 episodes
Premiered Sep 21, 2009
Season 4
24 episodes
Premiered Sep 23, 2010
Season 5
24 episodes
Premiered Sep 22, 2011
Season 6
24 episodes
Premiered Sep 27, 2012
Season 7
24 episodes
Premiered Sep 26, 2013
Season 8
24 episodes
Premiered Sep 22, 2014
Season 9
24 episodes
Premiered Sep 21, 2015
Season 10
24 episodes
Premiered Sep 19, 2016
Season 11
24 episodes
Premiered Sep 25, 2017
Season 12
24 episodes
Premiered Sep 24, 2018
Ep 1Pilot
Brilliant physicist roommates Leonard and Sheldon meet their new neighbor Penny, who begins showing them that as much as they know about science, they know little about actual living.
Ep 2The Big Bran Hypothesis
Leonard volunteers to sign for a package in an attempt to make a good impression on Penny, but when he enlists Sheldon for help, his attempt at chivalry goes terribly awry.
Ep 3The Fuzzy Boots Corollary
Leonard asks a woman out after he finds out that Penny is seeing someone.
Ep 4The Luminous Fish Effect
Sheldon's getting fired forces him to explore what life has to offer outside physics, leaving Leonard to take drastic action to snap his friend out of his funk.
Ep 5The Hamburger Postulate
Fearing he's wasting his time on Penny, Leonard ends up making a connection with Leslie.
Ep 6The Middle-Earth Paradigm
Penny hosts a Halloween party, putting Leonard, Sheldon, Wolowitz, and Koothrappali through a new test of their social skills.
CBS
US
