Sam, the self-proclaimed "all-American eagle", was originally voiced by Frank Oz, who is actually English, having been born in Hereford.
I'll get it!
Fozzie: Muppet Show backstage.
Kermit: Fozzie, who was it this time?
Fozzie: Las Vegas.
At the end of the closing credits, Zoot blows his horn and the Henson International Television logo pops out of it onto the screen.
In the Joel Grey episode, the song "stormy weather" (sung by Wayne and Wanda) and both of the Muppet News segments were cut from the RC1 DVD release.