A half-hour version of the landmark series, which is set in an ethnically diverse neighborhood where every day is a sunny one. It features songs, skits, animation and, of course, Muppets to teach preschoolers basic educational and social concepts. A public-television gem that's older than PBS itself, 'Sesame Street' debuted in 1969 on National Educational Television. Since that time, this influential show has won more Emmys than any other in TV history.