Boston Legal

10-11 PM · ABC · Returns Sept. 25

As if the Beantown law offices weren’t nutty enough, now John Larroquette is joining as Carl Sack. ”He and [William Shatner’s] Denny have a past,” says exec producer Bill D’Elia. ”They don’t like each other.” Shatner, James Spader, and Candice Bergen are practically the only stars left for season 4, after a major cast overhaul. New David E. Kelley creations include comely litigators played by Tara Summers (Dirt) and Taraji P. Henson (Hustle & Flow). Expect cases that involve teaching abstinence in school, the ”Don’t ask, don’t tell” military policy, and cockfighting. And no, he doesn’t mean the sparring Spader and Shatner do at the end of most episodes. D’Elia: ”We’re proud that we show two adult men just sittin’ around chatting with no agenda.” Hey, it gets them Emmy nods…