If you're hankering for some good, old Tribes style FPS carnage, check out Fallen Empire: Legions at http://www.instantaction.com/.
It's the first 3D game in a browser that I've played and I'm pretty amazed at how well it works. Garage Games was founded by some ex-Dynamix guys, who worked on the first two Tribes game. They've revisited a lot of the same territory here, including jet packs and cool floating bases. Hyper bleeding edge features like party-system matchmaking make a great first impression.
Bodes well for other upcoming browser games like Quake Live. PC gaming might not be dying, but it's retail presence most assuredly is. If this model works for developers, I think we could be glimpsing the future of gaming on PCs.
