“Young Adult” is one of those movies that doesn’t leave you when you leave the theater. The screenwriter, Diablo Cody, takes you through a story that’s working at many levels at the same time, not unlike her first feature, ”Juno.” We follow Charleze Theron, once again playing the edgy, high-functioning train-wreck (see “Burning Plain”) not at eye-level, like a Bukowski film, but from up above, looking down. A safe place from which to follow this tale of dysfunction. As it turns out, the books she’s written in her once-popular teen series, have been her way of sublimating the demons she herself wrestles with in her thirty-something, detached life. She wrestles with being stuck in the comfort of her teenage life, and with alienation, alcoholism, and depression. But told through Cody’s eyes, it’s funny, heartbreaking, pathetic, and reaffirming all at once. And like all good movies, it keeps unfolding in your head long after the credits roll.