iTunes is not a great piece of software, but it does some pretty nice things for you. Backups of your phone, store integration, fairly powerful play list manage

iTunes is not a great piece of software, but it does some pretty nice things for you. Backups of your phone, store integration, fairly powerful play list manager, syncing. All in one place. Over the air updates are nice I guess, but how would I backup and restore 30Gb of data to my phone over the air?