Other than a brief stint in Vegas, been in CO all my life. Went to CU Boulder, now live south of Denver and work in Golden. You didn't mention where your internship is, but a half-hour from Denver really could be anywhere. I'm guessing you're pretty young. If that's the case, and you're a half-hour from Denver, I'd do what you can to live close to the city. I've been removed from the bar scene for quite some time, but know it's still going strong. Ace mentioned Shotguns - I lived in Cherry Creek/County Club area for a long time and love Shotguns. Stay away from the Springs (unless you're military/conservative, as Enfugo stated).
Love Colorado. Only place I'd ever move to is Monterey Bay area in CA.