I just read the CUDA entry in Wikipedia and realized that while I'm a fairly proficient computer technician, a computer scientist I am not. I caught a few bits, such as the programming stuff about the float vs. double data type and recursive functions, but that's about it.
As far as TruForm, the only game I remember that I played that supported it while I had an ATi card was Serious Sam: The Second Encounter. I remember it was nice-looking in the game except for the health cubes, which ended up being almost spherical with TruForm on.