What's the largest beer maker in the world? When was the first brewery established in the U.S.? If you know the answers to these questions (or if you just love beer), head downtown to Wynkoop Brewing Company's 13th-annual Beerdrinker of the Year Finals, and test your knowledge against real suds gurus. Three beer aficionados will sit before a panel of judges and attempt to answer the most difficult beer trivia, while bystanders sip on the Wynkoop's newest wheat pour, Venzke Weizen--a brew developed by last year's finalist. 2 p.m., 1634 18th St. 303-297-2700, free