Interesting article about Daniel Tammet, an autistic savant well known for reciting Pi to 22,514 decimal places.  He recently wrote a book called Born on a Blue Day (not out yet) that describes his life in detail.  Writing and communicating are often difficult for people with his condition, but he seems to be highly functional. 
Tammet is doing well at answering my questions, even the indirect ones. As he explains in his book, he often appears rude because he doesn't respond if a question is not direct and explicit. "I am answering because I know from the context that you must be asking questions and that I must talk," he explains.

But the most distressing aspect of his condition has been his difficulty in understanding emotions. "I have to pretend to show emotions, such as triumph when I beat the house in Las Vegas. I don't enjoy films because the characters' expressions make no sense and I don't find verbal humour funny, though I do like slapstick."
(via Digg) #math