Finally beat this game sometime last week, and man were my arms tired. Those of you that have played against the last boss will know what I am talking about. This is one of those games that really justified the purchase, and while the game had it's frustrating moments, it was still worth it. The ending was pretty cool. Still, as far as Sonic 3D games go, my favorite is still Sonic Adventures, which I still have for Dream Cast, one of the best last boss fight ever with sweet music to boot.
I was able to get a used copy of 'Beyond Good & Evil' for Gamecube. That game is really good, can't believe I almost missed it, but that's the nice thing about it, got it cheap and now is a good time to hunt down some of the games I missed, which are A LOT.