One thing that will drive me crazy is when you book a window seat on a plane and there is a wall with nothing. This was the case on the super deluxe Virgin Dreamliner.

It was claustrophobic ten hours of staring at nothing. A really nice woman offered to swap with me.

I watched the movie Everest where all the climber's died in the 90's then looked out of the window and saw the flight was over Greenland, it was spectacular looking down on the world you can only see from above, it made up for the flight.