It’s pretty nifty. Basically, you choose either a dictator or a sitcom character and then the site will ask you a series of questions and then it should be able to guess who you chose. (Disclaimer: I think it only works with US sitcoms, so keep that in mind if you furriners try it).
For the record, I chose Pol Pot and it guessed correctly. I think the tip-off was when it asked me if I had been a leading character in a film titled “The Killing Fields.”
It guessed correctly with me as Barney Gumbel from “The Simpsons”, Bud from “Married with Children” but could not come up with Detective Frank Drebin from “Police Squad!” - although it says the name is in its database and has been guessed before.
Deb from Everybody Loves Raymond, check.
Slobodan Milosevich, check.
Jamie Buchman from Mad About You, check (once I answered the questions correctly).
Fidel Castro, check.
Carter from Spin City, yup (again, once I got my questions right).
Margaret Thatcher, yip. I maintain she was a dictator.
It guessed Thing from The Addams Family correctly, but thought Poochie (the dog Homer voiced on an episode of The Simpsons) was Max Headroom. It got the Inanimate Carbon Rod on the second try-the first, it thought I was Krang, the brain guy from Ninja Turtles. I think one time I got Jesus when I was thinking Super Mario.
Don’t be creeped out–it’s just a neat trick of process of elimination. You can pretty much only stump it once, since if you do it asks you to add a question that would identify the person you are thinking of.
Next, try it by answering questions about you personally. It thought I was Jeremy from Sports Night.
I found this link on SDMB a few months ago. It’s fun to answer for yourself and see what it comes up with. I was Cleopatra, which I think is pretty cool. One of the questions was something like “Have you killed more men than you’ve slept with?” (Answer: no.:))