Having lived in Denver for 10 years, I spent a fair amount of time up in Boulder. In fact, I worked up there for about six months. (I believe those where the Programming in Java days, not quite as exciting as the Programming in C/C++ days.)
The mountains are right there, which is only one of the things I love about the town. The people are friendly, the Pearl Street Mall is a blast and, well, the mountains, people! They’re RIGHT THERE.
Ah, I miss the Rockies.