If anyone deserves his own HBO documentary, it is disgraced former D.C. mayor and sitting City Councilman Marion Barry, the one-time gay rights advocate who is our newest crackpot foe. Airing tonight at 9pm, Dana Flor and Toby Oppenheimer’s The Nine Lives of Marion Barry will attempt to explain how one man — caught smoking crack! on tape! — still enjoys things like elected political office. Barry, who cooperated with the doc, says in the film, “For those people who are Barry haters, this movie puts it into perspective.” Let’s hope.