If you want to see a show while you're in town, try and grab some tickets at CityStage Symphony Hall in Metro Center. If you enjoy the show and want to see another, Paramount Theater is just a short walk away.
You could catch an event at MassMutual Center, a stadium in Metro Center. If you think MassMutual Center is cool, you also might like Big E Coliseum and Forest Park Tennis Center, both located nearby.