The Muppet Introduction (1975)
"Janice introduces "the person who will introduce the person who will introduce the next speaker," P. Fenton Cosgrove, who brings on Sam the Eagle, who (reluctantly) presents Kermit." (Muppet Wiki)
"Janice introduces "the person who will introduce the person who will introduce the next speaker," P. Fenton Cosgrove, who brings on Sam the Eagle, who (reluctantly) presents Kermit." (Muppet Wiki)