In 2007 I was bumped from a Delta flight leaving Shannon, Ireland returning back to the States. It was kind of scary, as Delta employee's met me at the door of the airport, called me by name and asked me to follow them. I was taken to the Delta office, not the counter and asked if I would be interested in letting someone else have my seat.
I asked the women what would be in it for me? She said that Delta would put me up in a room for the night and give me food vouchers, but that they needed my seat. It seems that they had over booked the flight out of Dublin by 60 people.
I told her, I expected that much. But that she didn't understand what I was asking. What was DELTA willing to GIVE ME!? She laughed and said that she could give me a $1000 dollars voucher toward a future Delta flight, plus the room and food. An if I was willing to stay more than one night, that I would get a $1000, room and food for each night I agreed to stay over. It ended up they only needed me to stay for the one night as people in Dublin agreed to be bumped the other nights.
It worked out great for me, as I knew I would be returning in a few months and now my ticket was paid for!