I find Petrosyan's manner here very interesting.  Because of his skill and his experience, sometimes you forget that he's pretty young, but here I think you can really see it.  He looks somewhat uncomfortable and daunted by this whole thing, like he's not really sure what to do.  I'm sure it's the shell shock of winning combined with, you know, a broken hand, but it's interesting to see someone reach the top who does not yet have that level of polish with the media.  Personally, I find it refreshing, as he really comes off as just a guy who worked real hard and made it big.