Watch The Big Bang Theory Online

You're watching The Big Bang Theory online free. Below is a list of episodes for The Big Bang Theory which you can watch and stream online for free. If an episode isn't listed it's because it hasn't aired yet, so check back regularly.

What happens when hyperintelligent roommates Sheldon and Leonard meet Penny, a free-spirited beauty moving in next door, and realize they know next to nothing about life outside of the lab. Rounding out the crew are the smarmy Wolowitz, who thinks he's as sexy as he is brainy, and Koothrappali, who suffers from an inability to speak in the presence of a woman.