ExtremeTech has a report on David Kirk's 'secret' presentation at WinHEC this year about the future of 3D graphics technology. It's quite interesting: database sorting using a GeForce FX, real-time photon tracing, real-time radiosity... it's all there.

The report links to this site, which explores the ways GPUs can be used for non-typical (ie non-graphics) tasks.

(From Spectrum, which got it from Slashdot.)