Scary Cartoons

If there's anything more disturbing than The Grim Adventures of Billy and Mandy -- a cartoon in which a scary little girl named Mandy gets one over on The Grim Reaper and forces him to become their best friend -- it's the concept of a Billy and Mandy Christmas special.

It gets even more creepy when said Christmas special has Malcolm McDowell guest starring as a vampire who first appears singing "Singing in the Rain."