I heard that TTT did not have bump mapping, but that the grounds were done completely with polygons and not with lighting tricks. So, to this day, there is no PS2 game that does bump mapping.
I tell you what though, DMC to this day is still one of the best looking games ever IMO. People will say that it had poor textures and some low polygonal characters, but this does not take away from the beauty that is DMC. Games like ICO and DMC show that even with a technically inferior console, if you have good artists, your game can be superior graphically. (Even without bumpmapping!!! *gasp*)
Artistic >> Technical
Just so no one jumps on me, I\'m not saying that Doom 3, Fable, don\'t look great, because they do.