Revealing mistake: When Leo Sayer is in the tree singing you can the wire on his back supporting him.
The Muppet Show (1976)
1 mistake in season 3
Starring: Frank Oz, Jim Henson, Dave Goelz, Richard Hunt
Statler: You know I never liked this show's theme music.
Waldorf: Niether did I.
Kermit: You promised.