Som has been putting together a 6000 piece puzzle. You can see the current progress (at 10th June 2008) – half done, the rest is mostly sky and trees. It is approximately 1mx2m in size. Started to do it in, I think, 2003. Estimated end date 2020 !!!
Update it is now 2020 and the puzzle looks the same. One of those projects that has to give way to more important things. I have a Marquetry picture I started about 40 years ago that is still to be completed!.