Free Rock Band DLC with Energizer Batteries
Can’t get enough of Rock Band? Or Energizer batteries, for that matter? The dudes at Energizer have decided to give away one piece of downloadable content with their new Advanced Lithium Batteries.
This site has more details. It is applicable to both PlayStation Store and Xbox Live.
BDGamers 
Minor edit: White-Wiedow is a she, not a he. I should know; I am her.