I thought this was an April Fool's Day joke, but the INFINITE JEST iPhone/iPad app (link prompts but will not actually open iTunes) appears to be real. I'm not sure how anyone could possibly prefer it, other than the portability, which means less to me after I've already carried it around through a few months. I would prefer not to be separated from my paper copy of IJ at this time.

If you had to choose one book to carry around with you, though, what would you pick? (You could keep and read other books, it's not a desert island scenario.)