He probably goes away to some kind of secret Dojo, where, with the aid of 10 Monitor liquid cooled supercomputer, he creates these awesome textures.
^^. You know, it wouldn't surprise me at all. Makes you wonder thou how does this guy come up with all these wonderful textures. Merely looking at the screenshots posted on this thread (http://img520.imageshack.us/img520/9765/telv1om8.jpg http://img518.imageshack.us/img518/9590/sadrithmora1yw7.jpg http://img10.imageshack.us/img10/1101/naga1jv5.jpg http://img520.imageshack.us/img520/9765/telv1om8.jpg), almost makes your eyeballs pop out of your head of the sheer amazement they provide.
I gonna give out my half-dollar and say that I believe that this guy is a professional. By looking at his material you get the indication that this dude is working on sometimes to perfect it, then he does it again, and again, and .. well you get the picture. It's professional stuff, so my thought is this guys works on some new game design for a next-gen game. Perhaps the next Elder Scrolls game, perhaps a brand-new MMORPG game, who know's. It just drips of ambition, charisma and quality over all he's work. You can't be a mere amateur and still create this wonderful things, or can you? Anyhow, that's my guess