These happened several years back
Once, the guy seated next to me in economy class "dissappeared" behind the curtain, came back with a smile and moved to business class. He told me that $50 did the trick!
The pilot suddenly announed the "termination" of the flight in London eventhough the flight was to continue to New York. Over 300 passengers were transferred to Emirates Airlines with much confusion. No one got any vegetarian meal and the flight didn't have any blankets or pillows.
Air India often gets delayed by a day. Although they are "on time" by clock is often late by a day! I can't understand how they are able to put hundreds of people in Hotels day after day.