Hey Ya, Charlie Brown! (Quicktime movie) is one of the best edited bits of whimsy I've seen in a long time. Originally by Venis Productions, they got a Cease and Desist from United Media, as have some other sites hosting the clip. I think they'll be chasing this one forever, though....

"Each Gum Blonde is 100% chewed bubblegum on a plywood backing. No paint or dye is used. The colour is inherent to the gum - the mixing of colour takes place inside the mouth during chewing using an endless variety of flavours ...."

Enchanted Ceiling : a photoblog