You are in a mall when the zombies attack. You have:
1. one weapon.
2. one song blasting on the speakers.
3. one famous person to fight alongside you.
Weapon can be real or fictional, you may assume endless ammo if applicable. Person can be real or fictional.
Weapon -
Shaolin SpadeSong - Queen's Don't Stop Me Now
Person - Bruce Campbell (how could it not be?)