Remember "The Adventures of Letterman" cartoons on The Electric Company? The narrator was Joan Rivers, who passed away yesterday (Letterman's voice is Gene Wilder and Spellbinder's voice is Zero Mostell).
Also, she was part of a folk comedy trio called Jim, Jake and Joan. Here is a short clip from a film called Once Upon a Coffee House. The guy with the glasses is Jake Homes, who wrote such commercial jingles as "Be a Pepper" for Dr. Pepper, "Be All That You Can Be" for the U.S Army, "Raise You Hand If You're Sure" for Sure Deodorant and, won a lawsuit against Led Zeppelin for swiping his song "Dazed and Confused."