Akinator, the mind reading genie
en.akinator.com
Akinator can read your mind and tell you what character you are thinking of, as if by magic. Think of a real or fictional character, answer few questions, and Akinator will try to guess who it is. Will you dare challenge the genie?

If you know the 20 questions -social (party) game, this is kinda the computer version of that. He can guess a character, and object or an animal. If he cannot guess what’s on your mind, you can teach it to him!