Have only ever applauded once, and that was because the pilots bluddy deserved it! Landing at LGW in a nasty storm in October 2001, we were warned the approach would be nasty, it was, but they got us down. Topped off by an announcement from the flight deck: ''And the aircraft behind us" he said triumphantly "has gone around!"
Cue applause from a very happy and relieved planeload of pax.