Gonzo's song "I'm Going to Go Back There Someday" in the desert after Doc Hopper made a serious revenge to break down the engine on Fozzie's Station Wagon.
Doc Hopper: I'm Doc Hopper, Reporting that if Kermit won't be a new spokeperson frog for my new Doc Hopper's Frogleg commercial, He will become a frog burger.
Kermit's epiphany immediately afterward: "Well then...I was lying when I said I never promised anybody anything. I promised me."
The final film appearance of Edgar Bergen and Charlie McCarthy, who died shortly after filming, and to whom the film is dedicated.
Kermit literally put his life on the line to rescue Miss Piggy, and how does she repay him? By running off the instant her agent calls with a hot tip on a job. It's so depressing that the film itself falls apart as the only possible segue.
It's a little hard not to choke up watching Jim Henson's Kermit singing his iconic song at the beginning.