Kermit the Frog
The Orson Welles Show
Creepy is an understatement considering there’s a scene where Miss Piggy’s “lifeless” body is poked and prodded in a lake. Here’s little bit about the unaired pilot via Wikipedia:
The Orson Welles Show was an unsold television talk show pilot. It has never been broadcast or released. Filming began in September 1978 and the project was completed around February 1979. […] Welles interviewed Burt Reynolds (taking several questions from the audience,) Jim Henson and Frank Oz, and performed two magic tricks assisted by Angie Dickinson. Several of The Muppets were featured in taped segments, including Kermit the Frog, Fozzie Bear, Gonzo the Great and Animal.
Update: A Dangerous Minds reader points out the dead Muppet scenes are from a Late Night with Conan O’Brien sketch. Thanks for the heads-up, Meaning_of!