I was assuming the small pharmacy working its way through his system might be helping, but really, it looks cool on video, and it's probably more awesome in real life.
That or he's seen this 100 times now and reacts like that to work the crowd. Still neat to see.
Yeah, this is on some TV advert here at the moment, you know, one of those "buy a camera, take pictures of special amazing shit and remember it forever" or something adverts.