Tommyknocker is cool especially if you want to shoot up to the hills. One of the older breweries in CO I think.
I live in Lakewood very close to Red Rocks. There are no good craft breweries in Lakewood in my opinion. For some reason, the craft beer explosion is happening everywhere but here...
Since you are close, I would shoot up to Golden and hit Cannonball Creek. It is one of the best newer breweries around here and their black IPA one gold at last year's GABF. There are 3 other small breweries in Golden as well....or you could just go to Coors...