This week’s installment, given its timing and guests, can’t help but be worth watching. Last week the show was on hiatus, so Bill Maher has two weeks of volatile headlines to explore. And tonight, Maher’s guests include David Axelrod, John Ridley (pictured), Matt Taibbi – who, respectively, have a provocative new book, a provocative new TV series, and the same old scrappy journalistic attitude.