When I'm on a long flight that has TVs embedded in the backs of headrests, I'll almost never watch one. Instead I prefer to flip channels on my TV without pause while staring at my neighbor's headrest to watch whatever movie he's selected. I've found it kind of annoys them when I laugh at funny parts of their movie, and based on the passive-aggressive fight for the armrest I almost always get I don't think they appreciate me endlessly changing my channels. If I settle on one channel, it's always the one that shows the map of our flight with a plane icon that's the size of Vermont indicating our position. It will toggle between speed and distance traveled, and it gives me time to reflect on how fast I can be soaring through the air at 30,000ft while still annoying someone sitting right next to me.