Xbox 360 owners can now download a multi-player demo for Tom Clancy's Rainbow Six Vegas. The 985.1 MB demo allows you to play in the Adversarial, Attack and Defend, Terro Hunt and 4 player co-op modes.
The download is Free and available in all Xbox Live regions to XBL Gold Members. Silver members will be able to download it on 11/24/06.
Thanks to Major Nelson for the info.