With my recent playing of this game on a friend's XBox 360, and my soon-to-be-ownership of an XBox 360 (and this game), I figure I should review this game. I love it. Seriously, this game is a much-overlooked masterpiece.
OK... the basic story goes like this. You play as Kameo, who I swear is the love child of Lara Croft and Link. Your sister, Kalus, was jealous of you, because she was supposed to get the titular Elements of Power (more on them later), but you did instead. So she... summons a giant freaking troll king and his armies to capture your damn family?! What the crap?! She could just hire someone to kill them all, but no! No, she has to summon a damn troll. (But if she hired assassins, there would be no game, so never mind.) So you have to get the Elements of Power and save them.
OK, so the Elements of Power. This is where it gets cool. The five elements (Fire, Water, Plant, Rock and Ice) allow you to turn into ten awesome, destructive, ass-kicking monsters! And they are pretty damn cool... from my least to most favorite, you have a gay spiky giant armadillo, a yeti, an icicle/snowball/thing, a plant that punches people, a dragon, a pile of rocks with fangs, a weird deformed (but awesome) squid, the plant from Little Shop of Horrors, my profile pic, which is a weird piranha/octopus/sea anenome, and an ant that carries a lava-shooting crater. They all do awesome stuff, like the ant can suck trolls into his crater and shot them off, my profile pic can swim, and the one plant can actually eat people. And spits out their blood. (They have green blood, though, so it's animated blood.) You start with the punching plant, the yeti and the damned armadillo, but you get more as you progress. You get the ant last! :( (You can see all these monsters and videos of them in action here.)
So basically, you go around different locations, killing trolls in funny ways (watch the videos), and... it's just a buttload of fun. Play it; you'll see.

Graphics: It's XBox, man... 9.5/10. Which reminds me... this game was made by Rare, so it would have been on the Gamecube, but Microsoft bought out Rare! Damn you Gates!
Gameplay: It starts off pretty easy, but it gets ball-bustingly hard as it goes on. I didn't beat it... yet. 8.5/10.
Characters: 10/10. Nothing else to say. Love 'em. Love 'em more than the Mega Man X bosses, like that's hard.
Story: The story... meh. 7/10.
Overall: Kameo: Elements of Power is pretty damn good. It would have been perfect, if the story hadn't hindered it a bit. 8.75/10.

Tune in next time for... something else.