I used to play the original flashpoint daily for a few years with a few buddies. Though it had plenty of bugs at first, and the graphics weren't the best, the game was (or maybe still is) the best "overall" military simulation game I've ever played. The physics, the game play, the giant maps, vehicles, weapons, different missions, etc, were amazing. And, the fact that there were nearly unlimited amounts of user-submitted missions, maps, vehicles, and weapons to download for free made the game even more phenomenal.
Battlefield 1942, and Battlefield 2 finally replaced it for me, but I still miss those Flashpoint days. I hope Flashpoint 2 plays as well as Flashpoint did, but with these types of graphics.