Home to the Avalanche and Nuggets, as well as some incredible shows and concerts, you have to attend at least one event at the Pepsi Center in your lifetime if you live in Colorado.
Only a few years old, it still has the "new feel" and events her always uplift my spirits. I saw Bette Midler here a few years ago and I was up in the "nosebleed" section, yet I could still hear her, for the acoustics are quite excellent. From the hawkers in the lobby to the shows themselves, it's always an experience. Made all the better if you can score a seat in one of their private (corporate, usually) boxes. Talk about good food, good fun and a good show.
Save your pennies up and go see at least one thing there! Your won't be sorry. It's a blast. Do plan to hit traffic congeston though--it seems to be inevitable.