Hmm...most people I know in RL are proud NOT to have been able to read LotR. (yes, yes, I know...) But I think pretending to have read the book is probably quite common among younger people, who grew up associating Tolkien with cool movies rather than the somewhat geeky image he had as an author when I was young.
Two books I would have thought would have been on that list, though, are Ulysses and Tristram Shandy. (I got to about chapter 4 in the latter...it's still in my bedside bookshelf
) And John Gray at number 5....why, in the name of heaven, would anyone pretend to have read that?