Moxie by Stephen Irwin (NSFW)

Animator Stephen Irwin has a very distinct style that's showcased in his short 'Moxie'.  It's the story of a bear, who becomes a pyromaniac after losing his mother.  The story is a day-by-day rundown during a particular week in the life of our extremely disturbed beast.  Beyond murder, he commits murder, torture, and other unspeakable acts.  The art is crude, and has the look of a very old, rough animation.  The black and white certainly adds to the creepiness level.  I'd say it definitely falls under the NSFW category for it's macabre elements, and sheer WTF factor.