Codemasters' promising new FPS, Bodycount, now has a single player demo available for download over Xbox LIVE. The game has a serious focus on run-and-gun gameplay and creating cool firefights and, without having tried it yet, reminds me a lot of last gen's Black. Fingers crossed on that one.
While the demo is single player only, the full game will include a co-op campaign as well as a full suite of multiplayer modes. It has a really neat, grungy, look and it's a new IP - so get to downloading and give Bodycount a shot!