Not quite on the aeroplane but 2002, flying from Moscow, Vnukovo to Yakutsk, we were diverted because of bad weather. To this day I can't remember the airport but as First (there was no business class) class passengers, along with our ten travelling companions, we were taken to a private lounge straight out of the 60's. There we were fed Caviar, Lobster and other seafood delights with various Vodka's and wines until we were poured back on the aircraft to continue our flight. That was pretty special.