When I was a kid there was this toy called the Jolly Chimp. It was a frightening chimp doll that would bang its cymbals, then bare its teeth while, with eyes bulging out of his sockets. It didn't seem like a kid's toy, and I think that's what the allure was. I never owned one as a kid, but my cousin had one, and I was mesmerized.
This toy has now become sort of iconic in that it's been featured in various movies, Close Encounters, Monkey Shines, and now in Toy Story 3. Ironically I drew this before watching the movie.
(OK, a side note, I'm such a fan of this nightmarish toy, as an adult I've collected and refurbished several of them and have two, mint, still in the box. There, I've said too much already.)