Similar to DannyD above I live in Lafayette, Colorado (just east of Boulder) and in the Front Range corridor we have the following breweries (in no particular order), which all make great beers:
Wynkoop - Breckenridge - Boulder Beer - Twisted Pine - Mountain Sun - Avery - Left Hand - Fort Collins - New Belgium - Odell - Phantom Canyon
It's an embarrasment of riches!!
p.s. Coors doesn't count
