A picture mosaic of my fiancee and I, made up of 360 separate photos used many times over. The primary picture itself dates back to May. I took it myself with camera held at arms length after we'd spent an afternoon planting shrubs in the back yard.
It took the last two days of hard work (well, with wine and music and snacks to sustain us it wasn't that hard) to finish the puzzle (768 pieces). The puzzle itself is beautifully made by picturemosaics.com It's an amazingly beautiful piece of work.