I'm picking up Sengoku Musou 2 with Moushouden (AKA Samurai Warriors 2 with SW2 XL) today. This is a Japan-only release. The U.S. (And I assume Europe/Australia later) is getting the 360 SW2 XL in the form of downloadable content, for 2400 points IIRC. I prefer having the disc personally, but this is a cool way to release the game for a good price. The double pack-only Japanese release also sucks for anyone who has the original 360 game.
Might get Bangai-O and/or Dodgeball too. Even that Sakura Taisen game looks kinda fun.
Didn't care for the original Vegas 360 demo, but if they release another demo for Vegas 2 and it seems fun, maybe I'll give it a try. COD4 really does nothing for me and I mainly just stick with Halo 3 for my online FPS fix.