This post is OT - if you're not currently addicted to ME2 then just walk away.  I thought I'd drop this for Plank, TCY and Evilducks and anyone else that wants a little more awesome for their game.

Here's a website that gives instructions on how to download all of the Dr. Pepper promotional items released by Bioware for ME2:

http://hellforge.gameriot.com/blogs/Hellforge/Mass-Effect-2-Free-Dr-Pepper-Promo-DLC-Codes/1

Enjoy.