Lady Gaga and Ellen answer questions about themselves in a gameshow-like manner.

Sheldon and Leonard face the conesquences of cleaning Penny's apartment in the middle of the night.

The boys from Dumb and Dumber play tricks on some people at the diner and a police officer on the road.

Monica's mom arranged to get their wedding announced in the paper, but they need to get a picture from a professional photographer as any camera makes Chandler's grin look like a hyena.

Sheldon, Howard, Raj and Leonard discuss time travel in the movie Back to the Future and the proper tenses verbs to describe their actions