I love stop motion animation (a very amatuer stop motion animator myself) and Pes is one of the best around.  His animations are short and usually pretty self contained… simple, but humorous and brilliantly executed.  He has a knack for finding the perfect object replacements to animate and his sound design is always spot on.  Everything on his site is well worth checking out (Roof Sex is a classic and his newest Western Spaghetti is amazing too).