Bockfest-Cincinnati, this weekend

Bockfest
March 1-4, 2007-Cincinnati, OH
Click here to view the event webpage
This underground festival, started in Cincinnati back in the 1800's when the Queen City was one of the premier brewing cities. At one point there were over 50 brewers in the Over-the-Rhine area and Cincinnati had the highest beer-consumption per-capita. This festival marked the day when all brewers released their bock beer. Bock beer is a strong lager that can be dark, amber or pale. It is traditionally brewed for holidays. German Catholic monks brewed it to consume during lent, when they fasted, because it contains more nutrients than most other beers.
Here is an article about the event