Interesting picture article showing the evolution of the Gran Turismo series from the first one back in 97 on the PS1 to the upcoming GT5 on the PS3.
http://www.topgear.com/innovation/gallery/gran-turismo/index.html

Whats amazing is that when you compare the graphics from the first one to the third one (the first one on a PS2) and then to the fifth one, you can see just how much the graphics have improved step by step.

I still remember being blown away by the graphics on the first one, and now it just looks so horrible.

I think it goes to show how spoiled we are these days with graphics, and when we complain how poor a new game is, we forget what we were happy playing back in the day.