Is credited with inventing Daffy Duck's favorite line, "Thanks for the
sour persimmons, cousin!"
Designed the original mascot of the Bob's Big Boy restaurant chain on a
napkin, based on a young boy who worked there.
When he did How The Grinch Stole Christmas (1966), he animated the iconic shot of the Grinch grinning an evil smile.
Animated the Grinch staring down from his cave and saying the Whos make all that "noise, noise, noise, noise" in How the Grinch Stole Christmas (1966).