My favorite Twilight Zone episode is on: "Time enough at last" about the bookworm who survives a nuclear blast. As an extremely near-sighted book lover who can't see without glasses or contacts, I have always identified with the thick glasses-wearing character Henry Bemis who can never find enough time to read.
I love my NookColor ebook reader (and its accompanying app for my phone) because it gives me the feeling that I always have reading material at hand. But some have pointed out that as we as a society move more towards books as electronic data, we are just as vulnerable as Henry Bemis and his fragile glasses because a power outage or computer virus could just as easily eliminate our ability to read the written word.
That's why, despite my love for my NookColor, I still love physical books and always will. But in honor of Henry Bemis, I do have a backup pair of glasses, just in case.