The Flames have posted a great article on their site about gameday music:
"Many people wonder about the songs played during the warm-up, opening sequence and more. The hardworking staff in the Entertainment department have plans for good saves, goals and fights. And then Calgary Flames favourite songs are played during breaks. Oh, that explains all the AC/DC and Metallica."
(It's a very agressive, heavy playlist.)
Also on the Calgary Flames site: Various clips from the Jumbotron on "Flames TV". (Choose "Jumbotron Clips".)