I lurve beer.
Our gaming group consumes massive, unbelievable amounts of mostly cheap swill- Pabst Blue Ribbon. Hell, I even dressed up as Sir Pabst of the Blue Ribbon for Halloween one year.
However, for actual preference, I think my current bent is towards Belgian white ales, and other beers of similar style. That explains my love of the New Belgium line- they try to capture that style, and they actually do a pretty good job of it.
If you want to know an absolute favorite beer, though, I'd have a hard time choosing, but Blackened Voodoo is near the top of my list. So is Fin du Monde, and so is Chimay.