Fast or automatic way to organize iphone/ipod apps
Connect your phone to iTunes, go to your phone in the sidebar, and select the Apps tab. There you should find some slightly less tedious app management where you can rearrange icons and/or screens. Perform a sync when you're finished reorganizing.

There's also a Jailbreak app called MultiIconMover, but the Jailbreak apps for messing with icons is a whole other kettle of fish...