First appearances of catchphrases or notable character elements.

The Muppets

• Kermit the Frog's first time playing the banjo: Sam and Friends: A Horse Named Bill (1960) ??

• Rowlf the Dog's first time playing the piano: The Jimmy Dean Show Episode 117 (1964) ??

• Kermit the Frog's first "Hi-ho": Kermit Lecture: Size Differences (Episode 0015) (1969) ??

• Kermit the Frog's first time riding a bicycle: The Muppets Valentine Show (1974)

• Miss Piggy's first karate chop: The Muppet Show Episode 104: Ruth Buzzi (1976)

• Scooter's first "Scooter fist": The Muppet Show Episode 111: Lena Horne (1976)

• Miss Piggy's first "Kissy Kissy": The Muppet Show Episode 112: Peter Ustinov (1976)

• Gonzo's first attraction to chickens: The Muppet Show Episode 204: Rich Little (1977)

• Kermit the Frog's first "Yaaaay!": The Muppet Show Episode 213: Rudolf Nureyev (1978) ??

• Animal's first "Woman! Woman! Woman!": The Muppet Movie (1979)

• Fozzie Bear's first "Wocka Wocka": The Muppet Movie (1979)

Sesame Street

• First interaction between Big Bird and Oscar: Episode 0131 (first time onscreen together); Episode 0144 (first conversation)

• First celebrity guest: Carol Burnett (first aired), James Earl Jones (first recorded)

• First time Big Bird and Granny Bird are onscreen at the same time: Episode 3006

• First instance of Telly's obsession with triangles: Episode 2780

• First time Rosita is seen without wings: ??