I know its too late for your trip, OP, but last month I did the Brewvana Conoisseur tour with Christian and Tom, the head guys from Hopworks. I highly suggest their tours - great stops and really cool behind-the-scenes tours of local breweries.
Mammoth Sledgehammer Brewing
On Deck: Chocolate Raspberry Stout, Founders Breakfast Stout Clone
Primary & Secondary: Fisticuffs ESB
Conditioning: Four-Leaf Comrade Irish Red Ale, Loch It Down Scottish Heavy 70/-
Drinking: Millennium Falcon Fresh Hopped IPA, Cone of Cold Porter, Drunkin Punkin Imperial Pumpkin Rum Ale, Left Coast Amber Ale