That was exactly what I thought from a distance, but the close-ups were Willie to me.
Well, whatever he looks like, I really enjoy not just listening but also watching him play. He's obviously very, very passionate about his playing. In the above vid, his eyes are closed for 80-90% of performance. In all the vids of him playing everywhere, he's always got an incense stick burning on the neck of his guitar. About 29 mins into the vid above, he gets real serious into the tune he's playing, but that's just one of many times he does so.