Ubisoft has released a single-player demo for Ghost Recon Advanced Warfighter 2, allowing you to try out this action sequel developed by Ubisoft's Paris studio and Red Storm Studios. The multiplayer demo can be found here.
Updated: the third video dev diary for the PC version is now locally mirrored as well.

Ghost Recon Advanced Warfighter 2 SP Demo (1.77GB)

Ghost Recon Advanced Warfighter 2 PC Video Dev Diary #3 (154.04MB)