Unsuggest a book
That wonderful world of bookish-magic, LibraryThing's new unsuggester is rightly causing quite a stir. Plug in your favourite book and rather than getting list of similar books you might like to read, librarything gives you their best guess at a book that is least likely to appeal! In one easy step you can turn your reading inside out and extend your scope. Alternatively, you can just have a good laugh, safe in the knowledge that you will never read anything like that.
Try putting in what is arguably the English-speaking world's favour novel: Pride and Prejudice and among the top ten 'unsuggested books' is The art of project management by Scott Berkun and The Google story by David Vise. A harsh judgement on what are, I assume, perfectly sound books but librarything has one thing right: I'm sure not going to be tempted to read them by any other means.