At the Future of Music Summit last month, OK Go lead singer Damian Kulash let us know that their next video was going to be shot with the Samsung NX-100.  It’s here, and keeping with the spirit of the song it takes a stripped-down approach, especially when compared to their last outing — the 3D Bucket Extravaganza of “White Knuckles.”  Stop-motion animation, 215 loaves of bread, a toaster, and laser etchings tell the story of “Last Leaf.”