Like its rock star protagonist St. Vincent, The Nowhere Inn is at odds with itself, a movie that isn't quite sure what it wants to be. On one hand, it's a funny mockumentary that takes aim at rock documentaries and the old saying that fame is a bitch, but on the other, it's a surreal meta-comedy that becomes too bizarre to make much sense -- like a Lynchian nightmare in smeared lipstick. Directed by Bill Benz, the hard-to-categorize film is a starring vehicle for Annie Clark, who's better known as the feminist rock star …