I just got a replacement iPhone 3g! I'm so excited. My old one was pretty scratched up both the screen and the back, but it had a long 3 inch crack in the middle of the back straight up that came out of nowhere (hard to prove). It also had the hairline crack near the mute button. As a "one time courtesy" I got a new one, just before my warranty ended. Thanks Apple! Really awesome. Now I am wondering whether to buy apple care. Do you guys think it's worth it?