Who has appeared in commercials for Jell-O-branded products?

Several celebrities have appeared in commercials for Jell-O-branded products, including Bill Cosby, who was one of the most notable spokespeople in the 1980s and 1990s. Other figures include Olympic gymnast Nadia Comaneci and actress and comedian Ellen DeGeneres. More recently, celebrities like Kristen Bell and the cast of "The Office" have also featured in Jell-O advertisements.