This game is interesting on how it learns from its mistakes when he fails to guess your character.
I managed to make it miss with the Duke of Wellington and Professor Ochanomizu/Dr. Packidermus J. Elefun from Astroboy, but Akinator did guess the other ten I launched at him. (How the heck did he figure Danger Mouse?!?!?)
Just press "Play" and the genie will ask about 20 multiple choice questions and then give you his guess.
http://en.akinator.com/
Warning, this can be addictive.