Ellery911'
Red Rocks is a must do if you get the chance. Acoustics are not superb, they are good however. But, the atmosphere, the rocks, the sunset combined with a good band are just the best! I've seen the Grateful Dead (prior to their last shows there), Phish's last run there in August 1996, and the Dave Matthews Band once in 95.
all-in-all a way cool place for music.