Susan Sarandon (b. 1946) appeared in the 1994 special Sesame Street's All-Star 25th Birthday: Stars and Street Forever!
She has also appeared on Sesame Street, in a sketch with the Count. In the scene, they were stranded in front of a castle after their car had broken down on a rainy night -- a plot not unlike that of The Rocky Horror Picture Show, in which Sarandon starred in 1975. (EKA: Episode 2615)