Just For Fun!
Zimmer Twins (makes movies): http://www.zimmertwins.com/movie/create
Draw Stick Man: http://www.drawastickman.com/?m=1
Machinarium: http://machinarium.net/demo/
Switcheroo Zoo: http://www.switcheroozoo.com/default.htm
This is Sand (change pixels into sand): http://thisissand.com/