We just got back from visiting the kids, so I had a work-week on a plane, 40+ hours between the round-trip. When you have that much time on a plane, you can sleep, you can read, or you can watch movies. You can — I can’t sleep on planes, so that leaves the last two. I’ve found that a plane isn’t very conducive to reading, either; between the uncomfortable seats, the screaming babies and/or their parents, various meals, snacks, waters, etc., and sheer fatigue after ten hours or so, the brain just doesn’t want to process those words.
That leaves movies.