I rented Resident Evil for Gamecube, and I'm about half way through.
The game is simply unparalleled in terms of graphics (for ANY system game). You can't judge them by looking at screenshots on the internet either...they simply must be seen to be believed. It is simply the best looking game out there, for any system (don't take my word for it...check it out).
Apart from graphics (which obviously isn't everything), the gameplay is great--typical RE controls, love em or hate em. They did however add a few tweaks to make the gameplay better. It is easier to maneuver with the 180 degree turn, and I heard there were some other minor tweaks as well (although I'm not sure exactly what).
The Sound for RE is absolutely amazing. They have SO many different sounds. They have a sound for stepping in blood...they have a sound for stepping in blood with guts...they have a sound for stepping in water...they have a sound for stepping on a dusty carpet floor...etc etc etc. And the music--oh man. The game seriously scares me. I am 21 years old, and I decided one night that I'd rather not keep playing it b/c it was seriously freaking me out. I mean, it would be really quiet, and all of a sudden, for instance, dogs would come crashing through a window and the music would get EXTREMELY loud. Startles the crap out of you. Call me a puss, but not until you play it for yourself! lol.