In 1978, Paul Simon stopped by Sesame Street to perform "Me and Julio Down by the Schoolyard." Sitting on the stoop of 123 Sesame Street, Simon and a little girl play an abbreviated version of the song, while kids dance in the street. Adorable.

For a second dose of vintage brilliance, here's the official music video for the song. Yes, that's Big Daddy Kane and Biz Markie at the beginning! Keep an eye out for the various sports greats throughout:

See also: The Sweetest Sesame Street Moment.