Features the first 'Pigs in Space' sketch.
Featuring Milton Berle as the guest star, this episode opens with Timmy, the Muppet monster, hitting Berle in the face with a giant powder puff while shouting "Makeup!" This was an often-repeated gag on Berle's first TV show, The Milton Berle Show (1948).
This is the second time the Muppets would do The Entertainer. Phyllis Diller played with the band on a saxophone in S1, Ep18.
With the introduction of Pigs in Space, Link Hogthrob and Dr. Julius Strangepork appear for the first time.