I heard a rumour saying the UPS MD-11 pilots decide to taxi the plane out just to see the A380 departure, then they're back to the cargo stand but I am glad they did just that.
So I ran across this while browsing airliners.net, pretty fun stuff!
Heck I would do it! (btw MD-11 and MD-10 favorite planes)
Anyways heres the pic that accompanied said rumour: