Fit as a Fiddle

Fit as a Fiddle was the UK Spot on Episode 501 of the Muppet Show. It was originally sung by Gene Kelly (the guest star for the episode) and Donald O'Connor in the movie "Singin' in the Rain". On the Muppet Show, it was sung by two dogs try to win the heart of a female dog, who eventually settles for Lyle the Dog.