Final Cut Studio Producers can have access to files that far exceed the storage capabilities of an iPhone. By downloading the MobileMe iDisk app, you will be able to manage what is on your iDisk from your iPhone. This will allow you to be able to attach files on your iDisk to email sent from your iPhone. If that isn't enough reason, remember you can output from Compressor to the iDisk. You could output through compressor to the iDisk, and then distribute from your iPhone. That can be very useful when you're on the go.