Welcome to The Big Bang Theory at WatchOnlineFree.TV, a great website for those who love to watch The Big Bang Theory online for free. Here you can stream all episodes online without having to downloading any additional software on your computer. If you missed the latest The Big Bang Theory episode on TV, make sure to check our website to follow up on this series!
Latest episode, aired 20 hours ago.
When the gang decides to spend Thanksgiving at Mrs. Wolowitz's house, Sheldon protests; Leonard and Penny deal with an error from her past.
When a mistake comes to light, Sheldon makes Leonard walk a mile in his shoes; Penny decides to confront Raj's ex.
When Professor Proton asks Leonard for help with an experiment, Sheldon retaliates by befriending Proton's rival, Bill Nye.
Sheldon's major scientific breakthrough makes him feel like a fraud. Meanwhile, Howard's romantic gesture to Bernadette causes Penny to step…