Cheers season 11 episode 20
Episode title: Look Before You Sleep
Sam locks his keys in the bar, meaning he can't go home. He goes to Carla's to get her keys to the bar, but Woody has them. Carla offers Sam her couch for the night, but John Allen Hill is there so Sam heads off. He visits the houses of Cliff, Norm and Frasier before finally ending up in Rebecca's house.
