Been having a very lazy day today and came across this online - it's a timelapse video of the Olympic Stadium in Athens that starts with the Opening Ceremony and then shows all the work that is required to turn a 'theatre' back into a track and field venue and then back into a 'theatre' for the Closing Ceremony. I don't recall seeing it linked here before but of course at 429 pages, I could be wrong!
It's quite a thought provoking 3 minutes although I'd go without sound unless you want Las Ketchup in your head for days to come!
[video="youtube_share;5F1gKUDTwAw"]http://youtu.be/5F1gKUDTwAw[/video]