Alive & Undead. It’s an upcoming indie co-op side-scrolling hand-drawn zombie-killing brawler. You play as Elvis, or some weird woman in a Where In The World Is Carmine Sandiego? getup. Elvis is a zombie, he kills other zombies. (Lies: You play as Elvis Impersonator and Vampire, Smith). Either way, it looks rocking.
You really need to see the high-resolution mock-up screenshot to appreciate the detail they’re going for. And the Alive & Undead Official Trailer [YouTube]. The game is aimed at 360 and PS3, if the devs can get a publisher.