Akinator can read your mind and tell you what character you are thinking of (en.akinator.com)

51 tries to get the stay puff Marshmallow man which is what I think a lot of men of a certain age will think of when told to thing of something (or not). I loled.

It nailed obi wan kenobi in about 12 turns. Wild.

It guessed Sarah Connor correctly in 32 questions