I picked up all three of the new Walmart Exclusive Comic Packs yesterday at one of my local stores. They are much better than the first three that Walmart put out:

Revenge of the Sith #1 (Dark Horse)
Count Dooku & Anakin Skywalker

Star Wars #44 (Marvel)
Lando Calrissian & Stormtrooper

Revenge of the Sith #3 (Dark Horse)
Kashyyyk Trooper & Wookiee Warrior

I think that all I'm missing right now are what eddie said were "Target Exclusives".