
Mensa-fied best friends and roommates Leonard and Sheldon, physicists who work at the California Institute of Technology, may be able to tell everybody more than they want to know about quantum physics, but getting through most basic social situations, especially ones involving women, totally baffles them. How lucky, then, that babe-alicious waitress/aspiring actress Penny moves in next door. Frequently seen hanging out with Leonard and Sheldon are friends and fellow Caltech scientists Wolowitz and Koothrappali. Will worlds collide? Does Einstein theorize in the woods?

155 of 162 Reds games this season on Fubo

154 of 162 Pirates games this season on Fubo

154 of 162 Guardians games this season on Fubo

The gang is concerned when Sheldon's former admirer, Dr. Ramona Nowitzki, resurfaces while Amy is away at Princeton.

Amy answers Sheldon's marriage proposal; Howard and Bernadette struggle with unexpected news.

Leonard's job is at stake after he gives an embarrassing radio interview; Amy and Bernadette bond over having to hide their success from Sheldon and Howard.

As Sheldon stresses about picking a wedding date, Amy tries to convince him he has a more laid-back side; Koothrappali and Stuart compete to win the heart of Bernadette's new co-worker.