Well, it's beer city, with lots of old breweries, original home to Schlitz, Pabst, and Blatz (all of 'em bought out by Miller), and there are lots of smaller breweries, and it's got some interesting buildings, a couple cool museums, and five or six colleges. The bike and music scene are kind of small, but decent. Biking around in traffic is fun, and outsmarting the kops isn't too hard.
I am making it sound worse than it is, I suppose. Personally, I don't plan on living here for more than a year or two longer, though.