Best game ever? I'm not sure, but it's damn close.
Gameplay: 10
The gamplay is superb, a lot has changed from previous zelda games believe it or not. The whole aiming with the wiimote is one example, but the new weapons and techniques you learn really add to the experience. Playing as a wolf is pretty enjoyable, but sometimes feels like a hassle (especially when you have to look for the bugs). I don't want to give away too much, but you'll find you solving puzzles which use new items that you've never seen before in any other zelda game before.
Graphics: 10
Twilight Princess is a very well done game. It doesn't use the Wii's full potential, but that's to be expected, since it is a Gamecube game with Wii controls added on after all. The artistic style was done really really well and the environments are beautiful. Sound: 10
Zelda games always have good music, and this game delivers. It may be done in midi supposedly, but it doesn't really matter, because it sounds the same as any other game in my opinion. The music is written really really well, with tunes that fit the environments and moods perfectly.
Value: 10
I beat the game in 42 hours, which is very long for a LoZ game, but I haven't even done all the sidequests yet, which could easily add another 5 hours to the game. Definitely worth every penny.
Tilt: 10+
This game is soooo much fun. Honestly, I've never played a singly-player video game that was this much fun, every moment was enjoyable, and the temples were the best, better than any other LoZ game. Final Score: 10
I don't agree with Gamespot's scoring system. Just because a game doesn't have perfect graphics/sound doesn't mean it isn't a 10/10 game. They should focus more on how fun a game actually is rather than the aspects which don't really make a difference. This game is loads of fun, I really really enjoyed it and I'm sure you would too, please get it; if not for the Wii, then for the Gamecube.