I must concur with what the Dragon has stated regarding World in Conflict.
It's a really fun game, but it definitely works best with a good team that actually works together. THe RPS-ish, combined arms mechanics really sort of require a joint effort to be truly effective.
It's still fun though, but I've taken to playing helis over the other classes because they're the ones with the most autonomy. Since they can't capture points, you're pretty much free to zip aroudn the battlefield making hit and run strikes, dodging any AA that should happen to rear it's head.
It's a lot of fun though. A LOT of fun.
I've also been thoroughly abusing the Puzzle Quest demo, and I'm glad to hear it's coming to PC.
Civ4: Beyond the Sword is also on it's way, and I intend to have it by whatever means necessary. The demo they released of the Final Frontier mod was brilliant, if a bit more micromanag-y than base Civ. And of course, it's only 100 turns, which means all it serves to do is give you just enough of a taste to want it desperately.