The first appearance of Dr. Bunsen Honeydew.
Guest star Paul Williams went on to compose music and write songs for other Muppet productions such as Emmet Otter's Jug-Band Christmas (1977), The Muppet Movie (1979) (in which he also has a cameo), and The Muppet Christmas Carol (1992).
Fozzie as "The Telephone Pole" uses the name Mike Oznowiczki. Fozzie's voice actor Frank Oz was born with the surname Oznowicz.
Guest star Paul Williams sings two of his own compositions, "Sad Song" and "Just An Old-Fashioned Love Song," the second of which was a big hit for other musicians like Three Dog Night.
First appearance of Robin the Frog, although he would not be formally introduced until Harvey Korman (1976).