Guy Smiley is, by his own account, America's Favorite Game Show Host. He has hosted such Sesame Street game shows as "Beat The Time", "Here is Your Life", "What's My Part?", and others. He approaches every hosting gig with a near-frantic level of excitement and enthusiasm.
Guy Smiley has occasionally demonstrated his musical talent on Sesame Street. His song performances include "Air," "They Can't Take That Away From Me" (with Cookie Monster), and "Gone with the Wind."
Source: CC Muppet Wiki