A few through the years...BGR for a IAH-LGW flight on CO in 1987 where they subbed in a DC10-10 for the normally scheduled -30. I'd booked C class, and used up all my OnePass miles (which was the goal...) but the new plane only had F and Y (it had the Pub installed which was great on the HNL flights). I pitched a stink and they indeed moved me up.

On QF in 2000 on a BAE flight from Perth to Ayers Rock we had to stop in Kalgoorlie...only thing memorable was that they kept the doors open, they insisted that our seatbelts be off and the flight attendants marched continuously up and down the aisles to make sure they stayed off.