Savant syndrome can be very interesting. Usually, when you think of savants, you think of people who have great difficulty dealing with the outside world. This isn't always the case, as Daniel Tammet proves. In the video, which is excerpted from the TV special Brain Man, you can see both his ability to perform amazing mathematical calculations, as well as interact quite normally.

Mr. Tammet is even the president of his own e-learning company, called Optimnem.

If you're interested in what type of research is being done to find out about the nature of his savant syndrome, there are further excerpts of the show here and here.

Update (6/29/06): On Google Video, you can not only find the same footage shown above, but an additional clip in which Daniel meets Kim Peek!

Video Formats:
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Google Video
Windows Media
YouTube