i cant think of it now but there is some little program where a check will strip and dance on your screen, like desktop girls or something. its pretty cool, i remember you could download lots of different types of chicks.
My screen saver is like looking into a salt water aquarium. Fish swimming around and the bubbles from the aeriator rising to the top and a starfish that crawls slowly across the bottom and even sticks the computer screen surface to make it look like it is stuck to the side of the aquarium. Complete with sound effects. Pretty neat.