OK Go's latest music video for "A Stone Only Rolls Downhill" uses 64 iPhones and an awful lot of planning and effort.iPhones in the music video for 'A Stone Only Rolls Downhill' - Image Credit: OK GoOK Go is a band known for coming up with unique music videos, with the eye-catching efforts aiming to get viewers and listeners for being creative and unusual.This has ranged from orchestrations on running machines to dancing with motorized unicycles, to careful filming on a zero-gravity flight. Continue Reading on AppleInsider | Discuss on our Forums