Stevie Wonder on Sesame Street, 1973 | Muppet Wiki

David's grandmother Grace was a recurring character on Sesame Street from 1976 to 1989. Played by Clarice Taylor in over 30 episodes, her role often served as a surrogate grandma to other characters on the show, including Big Bird, who's missing his Granny Bird in this episode from 1978. | Muppet Wiki

Oscar the Grouch gives Siskel and Ebert the thumbs-sideways. | Muppet Wiki