1) My aircraft today, we were informed by the attendant, had two captains rather than the usual captain and co-pilot. This made me rather uneasy, because I can't see how two people can be in charge of the same plane. I couldn't help picturing them wrestling over the joystick and crashing the plane. That didn't happen - but I did notice that neither of them took the time to make the usual weather and time call topped off with an insincere wish that we enjoy our flight and patronise the airline again. They probably felt too important. Or were too busy wrestling.
2) When I was on the plane, the guy on the other side of the aisle discovered, apprently for the first time, that the arm rest between him and the vacant seat next to him moved up and down. He then enjoyed a "Homer Simpson moment"* ensuring that it wasn't a fluke the first time.

* I'm referring to the episode where Homer is in hospital and he plays with the bed, repeating: "Bed goes up, bed goes down."