In the new Disney Dream cruise ship, the inside cabins have "portholes" that are round HD monitors. These portholes show an image of the outside of the ship as seen from one of the external cameras. it's pretty cool to be able to see out from inside of the ship. To make it better, being Disney, they add images such as a pirate ship on the horizon, the starfish from Nemo stuck to the glass or Mickey Mouse SCUBA diving.
An Airline could take this idea and run with it. The video of the outside of the plane could feature Superman flying alongside, Star Wars craft in a battle or if they really want to get tech, a downward-facing camera with cities and states' borders superimposed over the terrain much like the line of scrimmage and 1st down lines on an NFL game.