Xbox 360's first actual "killer app"!
Ever since Halo 2, I had not been able to find a good multiplayer game to latch on to and carry me until...well...Halo 3. Gears of War turned out to be exactly that. Sure there are a lot of errors in the game, including a lowsy setup for the multiplayer matches, and the ability to join ranked matches with your friends is disabled (unless you're smart and know how to get around that, haha) but those can all be fixed with a patch, which I'm almost 100% sure they are working on right now. Even with thses minor errors, this game turns out to be exactly what it was meant to be....Microsoft's first killer app on their next generation console, the Xbox 360.