This has become a cult movie in Los Angeles because it’s not generally available on DVD (although you can find a bootleg in your local video store if you live in certain neighborhoods). “L.A. Plays Itself” isn’t so much a film as it is an essay (read by Encke King in a laconic monotone) that happens to be accompanied by film clips. The movie is notoriously long, even with an intermission, but you’ll find yourself thinking about it for days afterward.