I used to have this game for GameCube. It is one of my all time favorite games. I plan to download it so I can experience again on my laptop.
The production value and presentation are excellent. The art direction is excellent. The game has several different play styles as you progress through different sections - fighting, sneaking, platforming, racing, and even a few puzzles. It's all woven together into a seamless whole, with a compelling story and characters that grow on you.
If you haven't played this one, I can't recommend it enough. A true classic.