If there's anything worse than a flight delay, it's when the already-delayed flight gets delayed again. Seeing that expected departure time get farther and farther away just reinforces how little control anyone seems to have, and how all you can really do is sit and wait for your opportunity to get into a smaller, more enclosed space to sit and wait some more.
That's the moment any distraction can be welcome, but one that actually takes your attention away from the amount of time you're waiting is downright amazing.