I'm sure you've heard this a lot, but I really just bought this game for the demo. I really like Metal Gear Solid! After a while though, I got bored with the demo (after beating it 38 times) and decided to check the game I had spent 50 bucks on. Wow! This game was a real surprise. I liked just about everything about the game.
The control is nearly perfect (you won't believe how fast you'll be flying around!), the graphics were great, the music wa some of the best ever, and the plot moved along well. It was a great mix between Gundam and Evangelion. Too bad it was a little short. Aside from this flaw, if you own a PS2, you should really pick this game up.