Hi there. Yeah, I'll echo Dry Dock Brewing, that's great. Also, regarding Denver Intl Airport, I wrote this a while back on a post on beer advocate, summarizing what's available in the airport.
Denver International Airport (DEN)
First, the best thing is once you are through security, you can access ANY terminal. So even if you are on a layover switching planes, you can travel to terminal A B and C and do some great beer tasting.
Main Terminal (which is before security, so you can have a drink with whoever is dropping you off or picking you up.
--- Boulder Beer Tap House (new)
--- Red Rocks Bar is nice too, some good selections.
---***Most notably has the new "Chop House & Brewery" http://www.chophouse.com/
Great food, and great atmosphere, you forget you're in an airport. I really enjoyed all of their beers, you can do tasters there too. I got there early for a flight and had a full 6 tasters, a prime rib and then a pint of the beer I liked the best. Nice time.
--- Then there are plenty other restaurants and bars there, all of which have a decent selection of beer.
---Has the "New Belgium Hub".
-- Has a Rock Bottom Brewery and Restaurant
And again, all of the other bars there seem to have at least some kind of selection.