I went to my Installer.app on my iPhone and noticed there was an update for Customize. Well at first I thought it was going to be just a few added docks, or icons for the Carrier logo, which there was, but the coolest feature that I've been waiting for is custom sounds. I haven't seen this option with any other customization apps for the iPhone. So now you can change the sounds for new emails, messages, unlocking, etc. Right now there aren't any sounds to select, but I'm sure it's only a matter of time before you'll be able to have darth vader say "What is thy bidding my Master?" when you slide to unlock the phone. Opps, correction, you can download JPolynice Sound Set from your Installer to add new sounds.