The dance that the long-legged red muppet does during "Pure Imagination" is similar (if not the same) dance that Ben Vereen does in the musical Pippin.
Rowlf's favorite composer is Bach.
Fozzie: Kermit! Hey, you can't do the show without me.
Kermit: Well, Fozzie, what choice have I got?
Fozzie: But a Muppet Show without Fozzie Bear? It's like Gilbert without Sullivan. Ham without cheese. Poca without Hontas!
Kermit: Poca without Hontas?!
Kermit: What's a Poca?
(a pair of Polka dancers dance in)
Kermit: I know, I know! That's a Polka! Will you guys get outta here?!
This is the first and last time Jerry Nelson and Richard Hunt perform the two-headed singer. In his only other appearance he is performed by John Lovelady.
This episode was taped from 10/4-7/1976
"Fur Elise" is the UK spot. It was composed by Beethoven.
Fozzie's joke: Hey, I wouldn't say that The Great Gonzo is dumb, but when he graduated from school, he didn't get a diploma - he got a pension!
Gonzo's gong: Gloat hits Gonzo.
"Pure Imagination" is from the movie Willy Wonka and the Chocolate Factory.
"Mr. Cellophane" is from the Broadway musical, Chicago, which was directed by Bob Fosse, who frequently cast Ben Vereen in his shows.
"I'll Know" was written by Frank Loesser for the musical Guys and Dolls.
"Jump Shout Boogie" was written by Barry Manilow and Bruce Sussman.