The Wii-Mote and Nunchuck bring this game to life and distinguish it from its cross-platform versions.
The controls take getting used to, but there are several different control options available and you can find one for you very easily, from arcade blasting action to fairly realistic there's a control scheme for everyone. My only complaint about the controls is that sometimes when I'm not careful I switch targets in the middle of a dogfight because I move the nunchuck's analog wrong. That's more of a user error though.
The graphics are good, and I suppose its the details to the little things (like plane variety) that make the game a pleasure to watch. There is a "Follow Camera" that keeps the camera between you and your selected target, and it really enhances the feeling that you're in the middle of a fierce dogfight, maneuvering for altitude and a firing lane.
The sound is authentic to the time period, from the directional radio beeping to the various types of machineguns on planes, its all there.
I haven't tried multiplayer yet but I get the feeling it wouldn't be too interesting unless both players were familiar with the controls. Then you'd probably have a crazy dogfight on your hands.
Lots of replayability. You can unlock several different planes types and there's a few modes past the campaign mode to keep it fun.
It may have gotten poor reviews on the X-Box 360, but I think the great use of the Wii-Mote and Nunchuck breathe new life into this game and make it a worthwhile purchase for your Wii if you're looking for an air combat game.
I daresay between this and Heetseeker it will be difficult to make a better flight game.