On the most recent episode of "Mad Men," the agency was pitching a large coffee account that wanted to reach a younger demographic. A mention was made of a failed previous attempt that featured puppets. Well, a little digging reveals that lo and behold, such a thing did exist.
These were done on the 50's for Wilkins Coffee, and featured muppets courtesy of a young Jim Henson. They are strangely violent, especially for the era:
These would be fun scripts to write:
MUPPET #1: Hey, do you like coffee?
MUPPET #2: No.
SFX: Blam! (Muppet #1 kills Muppet #2 with cannon).
Ah, the good old days.