Most upcoming online games will feature voice communication, using the SOCOM headset or other USB headset. SOCOM II, Ghost Recon, Killzone, Gran Turismo 4, etc. And Madden NFL 2004, recently released, is the first game that uses it this year, and the first after SOCOM. And as for offline, the upcoming SOCOM II, SWAT, and Ghost Recon: Jungle Storm will support voice commands to AI.
And as for my opinion on the headset itself, yeah, it is an OK headset. Logitech recently released a higher quality version, with volume control and interchangable earpads. I'm was planning on getting one, but I think I'll stick with the first party. So I'll wait for Sony's USB headset, which also feature volume control, and some other stuff. Plus it looks a lot better (quality) than Logitech's. The microphone look a lot like Xbox Live Voice Communicator's microphone, which it isn't a bad thing. Enjoy your new game.