In Defence of the Dark
I'm addicted to a site called tvtropes.org. It's basically a catalogue of various literary and artistic devices used in various forms of media (books, movies, TV). It's fun because the site gives names to practices that you already recognize but haven't bothered to identify in any specific way. Examples include Genre Blindness, which explains the tendency of Bond villains to reveal their entire master plan to the spy rather than just shooting him, and Lampshading, which is an attempt to diffuse an obvious plot hole by having a character draw attention to it.