An animated series of short episodes featuring small and cute animal-like creatures who wind up dead in a variety of horrible ways in each episode's end. Available on DVD and on the Internet at http://www.happytreefriends.com (Macromedia Flash plugin is required).
Every episode starts with an apparently innocent scene, where the characters are doing something not out of the ordinary, but suddenly something goes wrong, blood is smeared, and the characters get themselves killed in some funny, spectacular ways.
I must say, this is highly addictive to watch. Please keep it out from the reach of children, as it can screw up their innocent minds.