After multiple medical and refueling delays after leaving the gate in ORD for an AS ORD-SEA flight, they refueled the plane too much. Rather than returning to the gate, the pilots taxi'd to another part of the airport, and apparently stood on the brakes while running the engines for 20-30 minutes or so to burn off the excess before taking off.

That was just one of many adventures that night. ORD-SEA time: 12+ hours after boarding.