My dad's 7 year old 700mhz G3 iMac. It ran Tiger, spotlight and dashboard were too much, so it went back to Panther. It emails, surfs quickly, and cranks out word documents like nobody's business. What would Leopard give him? Spaces? Time Machine? The ability to Spotlight network storage? Please, supporting old OSes was never Apple's bag, but if they want to start now, I'd be happy. Some of us know the pain in the ass it is to find Classic OSes for our Classic machines...