Halo 3: ODST, we've got some good news. A premium ODST theme is available now on Xbox Live Marketplace. The theme obviously offers up some art from Halo 3: ODST, but also lets you surround the poor souls on your friends list with menacing Brutes. Best of all, the theme is free for Gold members (unlike the grotesquely expensive Sgt. Johnson). Go ahead, add it to your download queue and complete the ODST experience.
Be sure to check out Joystiq's Halo 3: ODST Review, as well as in-depth analysis of the Campaign and Firefight games modes -- and our new miniFAQ!