Sure is!
The Lakefront Brewery puts on a really fun tour. It's even more fun when you do it in a Friday afternoon and finish it off with the fish fry in their beer hall. Other fun tours are the Milwaukee Brewing Co, which isn't far from the Harley-Davidson Museum.
I know some people stick their noses up at all things BMC, but the Miller Brewery really is cool to see.
Some great places for food and beer are: Cafe Hollander/Cafe Centraal, (Cafe Centraal is next to one of the best beer bars in town, Sugar Maple), Hinterland (they make their own excellent beer), the Rumpus Room, and World of Beer (which is just up the road from Northern Brewer.)