I took this video of Cxbx playing Turok Evolution a while ago, but forgot to post it :)
The textures tend to show up with a "dirty" look to it (black pixels) on my GeForce 6600, but looks fine on my GeForce 5200.
What is Cxbx? It's an Xbox emulator that allows you to run Xbox games on your PC. So far Turok is the only "playable" game. A few others may give you intro screens and/or some menus. It uses HLE so it only supports XDK apps. Also 64-bit OSes are not supported.