I kid you not. Some creep (from France, naturally) has designed a video game based on 9/11: http://abcnews.go.com/Video/playerIndex?id=4074265. The goal of the game is to shoot down planes before they crash into the Twin Towers. The maker of the game has claimed that the game is designed to show the futulity of "America's War on Terror", because "no one can ever win".
Rarely am I speechless, but this is just such an occasion.