I just played the Wii movie tie-in game, and it sucked.

It's a 2d sidescroller using 3d models (2.5d?) and there's something with the controls that totally ruins the experience. I think it has to do with the fact that there's no such thing as a jump, you just press up and Hal automatically flies all over the place (he controls like a sluggish spaceship), and you walk when your feet touches the ground. You also get knocked around a lot, which makes you feel more like Ryan Reynolds than Green Lantern.

I have pretty low expectations with the mechanics involving their magic imagination rings, since I doubt it's workable in a video game right now, so I don't mind the very limited selection of constructs. I also don't mind the primitive graphics since it's the Wii we're talking about.