Leonard Has Some Sick Dance Moves

A big change happened on Monday's episode of The Big Bang Theory: Sheldon (Jim Parsons) moved out of Apartment 4A.

When Amy's (Mayim Bialik) apartment floods and she needs a place to stay for five weeks until it's repaired, Penny (Kaley Cuoco) suggests that Amy move into Leonard's (Johnny Galecki) room in 4A, allowing Leonard to fully move into 4B with his wife. Finally, the Hofstadter's will be free of their burdensome third wheel.

Amy proposes this arrangement to Sheldon as a scientific experiment in cohabitation, but Sheldon decides he'll only do it if they get their own place, because he doesn't want the comfort of his apartment as a variable. So it's decided that Amy and Sheldon will move across the hall into Penny's apartment, while Leonard and Penny stay in 4A.