It seems that the new wave of the web are these Flash mini-games. Unfortunately, it seems that most of them are for entertainment only, but it seems that if we could harness this medium for good some great things can come from it. Here are a couple that I have come across recently...

JoeCartoon,com

MiniClip.com (Depending upon your political seriousness, you might find the Bush clips entertaining).

ThreeBrain.com