Gluten free beer?

I would be really sad if I had to quit gluten, 1. because I like good beer, pasta, bread and all the grains and 2. because that would make vegetarianism slightly more complicated (though not impossible, but I strive to be as un-picky as possible, since it's bad enough I don't eat meat. or olives.).

But I read this article from NPR about gluten-free beers, and what one Celiac disease sufferer deems the best picks. I like reading about food and beer almost as much as I like trying it myself.

The only gluten free beer I've tried is Red Bridge, Anheuser-Busch's widely available brew. It made me sad because it seemed to be the only choice out there for friends who can't tolerate gluten for whatever reason, but I guess it wasn't terrible if all you're looking for is a plain old beer. This was a few years ago. It seems there are more choices now.

Has anyone seen this Dogfish Head Tweason'Ale (or any of the others in that article, actually)? I generally like Sam Calagione's creative works. I'd like to try it.

Have you tried any of these beers? Are you living in a gluten-free world? I'm just curious about this stuff. I'm obviously on hiatus from brewing till I move somewhere in a more complete fashion (I really just brought the essentials to Arizona, figuring it'd be stupid to fully move here only to potentially turn around and move somewhere else entirely upon finding employment), but I still like reading and learning about beer.