They aren't best friends, but House, Chase and Foreman go out together during the episode "The Choice." They even sing some karaoke.
Here's a scene we never thought would take place on House: House, Chase and Foreman take to the stage for some karaoke.
This patient lost his voice during his wedding ceremony. In this scene, House looks into the problem.
Adam Garcia guest stars on the 5/3/10 episode of House. He plays the show's patient of the week.
Taub and Thirteen talk with a patient that lost his voice during his wedding ceremony during this scene from House. It's from the episode "The Choice."
Chase, Foreman and House singing karaoke?!? This unusual scene takes place during the episode of House titled "The Choice."

House Season 6 Episode 19 Quotes

House: I woke up in the wrong bed this morning.
Nurse Jeffrey: Any bed you're in is the wrong one.
House: That's not what your mama said. Oh! Snap.
Nurse Jeffrey: I'll be going now. To Human Resources.

Dr. Wilson: Just think of this as a dream.
Sam: What about House?
Dr. Wilson: I said a dream, not a nightmare.