Since I do an airplane travel marathon twice a year (once to America, once back to Japan), this is one that hits pretty close to literal-home for me. When I'm on an airplane, I sleep if I can (very important when I'm doing trains, planes and automobiles for about 36 hours each way), read, occasionally chat with a seatmate, or play a game/watch a movie on my screen on the international flights. It's one of the few times I'm truly unplugged from the Internet, and honestly, I kind of like it that way. When I have Internet access, I get a bit lazy about my passing-the-time options. I'm also one of the very small minority of double-x types that doesn't like talking on the phone. Travel is a good time to get lost in a book.