 When she appeared on "The Tonight Show" in 1987, her back was turned and host Johnny Carson pretended to crunch into one of her prized chips; in 1999, "TV Guide" named it as the funniest moment ever on television, and was included in a collection of Johnny Carson's greatest moments.According to her son, she also appeared on "The Chevy Chase Show," Bill Cosby's "You Bet Your Life," Geraldo Rivera's "Geraldo" and Vicki Lawrence's "Vicki!