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I ran my Gamma World with theme music, worked out great. PCs introduced themselves to the A-Team theme song, then the big bad android enemy made his presence felt to the Terminator 2 soundtrack, then after escaping from him, the party infiltrated the enemy base to the Mission Impossible soundtrack (think Whose Line is it Anyway?). And so it went. I also devised a gladiator type battle where everyone had their own entrance music:

Mr. Winks, feline hawkoid, "Corona" by the Minutemen (the **** theme)
Hometeam, doppleganger (he played an entire baseball team), "Hell's Bells" by AC/DC
Baked Potato, stoner speedster, "Chemical Warfare" by the Dead Kennedys
Big Heart Bear, yeti empath, "Dancing Queen" by ABBA

Don't forget to reward your players +2 to hit anytime they work in a heroic quip before their attack.