There is one guy I have to deal with in a professional setting. I met him today in the supermarket, and I'm sure he didn't recognize me. He's got everything: the blank, dark stare, the monotone voice. When you shake his hand he whips his face sharply to the side so he doesn't have to look you in the eye, and drops your hand extremely quickly. People who deal with him complain very strongly about him sitting and looking only at his computer while having a conversation, and that he doesn't seem to care. I googled him for fun, and I found only two mentions; one where he was involved in an idealistic action, and another where he'd written a letter to the editor of a national newspaper, complaining about the low standard of a certain article, and how its grammatical errors made the whole thing impossible to understand...
He's a really ok guy, though. The funny thing is that if you actually talk to him you'll find that he is extremely serious about his job, and actually trying to help, he just gets extremely frustrated when he's not getting the information that he needs to do his job.
Perhaps I am wrong about him, but I get that same feeling talking to him that I get with some other aspies; what a relief to talk to someone who actually listens to what I say rather than imagining all sorts of strange things loosely based on what I said.
_________________
I sometimes leave conversations and return after a long time. I am sorry about it, but I need a lot of time to think about it when I am not sure how I feel.