Slightly off topic. But the Air France 747-400's have economy upstairs (unlike most airlines where business is upstairs). and it's sooo much better. It seems like a much smaller more private cabin and you have very very big window storage boxes to place your stuff and spread out onto. I flew on one to Rio a few years back.
In fact they've also done the same on the new A380, so sitting upstairs in economy with a window seat gives you a decent advantage over downstairs!
