Psychologically, there are two L.A.’s. One is where Naomi Watts gets to be the sunny aspiring actress Betty and have beautiful teeth and a gorgeous lesbian relationship with an amnesiac Laura Harring. The other is where Naomi Watts is Diane, with fucked-up teeth, an unrequited romantic obsession, and a bullet in her head. They’re both the same movie, and none of it makes any sense. But it says something about how the city sees itself: things are one way, or suddenly another.