If a guy like this were to get a legitimate psychiatric diagnosis, what do you suppose it'd be? Not that I feel bad for the guy, mind you, rather I feel it'd be helpful to the community of people who have been affected by this kind of behavior to have an accurate name for it other than just saying the guy is a douchebag.

I knew a guy in college who had some aspects of this guy's behavior and was diagnosed with narcissistic personality disorder (tragically, he fully embraced his condition), but I only have an armchair knowledge of psychiatry and I'd be interested to hear what somebody with experience has to say about it.