A woman suffering from borderline personality disorder (Kristen Wiig) goes off her meds, wins $86 million in the lottery, and decides to broadcast her own Oprah-style talk show, which becomes a vehicle for her petty grudges and weird obsessions. Naturally it’s a giant hit as well, elevating her from the paid-programming ghetto to an actual production deal. The premise of a lunatic becoming a media sensation dates at least as far back as Network (1975) and hardly requires another airing in our age of celebrity bloggers and viral video. But screenwriter Eliot Laurence and director Shira Piven wisely steer clear of tired social satire, focusing as narrowly on the heroine’s inner life as she does herself. They’ve also got the ideal star in Wiig, whose vacant gaze, frozen smile, and preternatural calm have always suggested a vast reservoir of madness. With James Marsden, Linda Cardellini, Wes Bentley, Tim Robbins, and Joan Cusack.