There's a bunch of companies such as 3dfx, 3Dlabs, ATI, Compaq, Discreet, Evans & Sutherland, IBM, Intel, S3, and SGI that have formed a special interest group called Khronos to design a cross platform API for graphics, video, and audio. This is very cool, as it could be a huge leap for gaming on Linux as well as all platforms that choose to implement the API. Imagine games that work seamlessly on Winders as well as Linux/Unix, BeOs, Mac, etc. I am somewhat surprised that nVidia isn't in on this.
Let's just hope they work with the other open-standards projects for these things. The promise of a "an industry wide, non-proprietary approach" just screams out for it ...