Brad and Jen’s marriage may be kaput, but at least one of their projects is going strong. Martin Scorsese’s crime thriller The Departed, which is being developed by Pitt and Aniston’s Plan B production company, added yet another A-list star to its cast. Variety reports that Jack Nicholson has climbed aboard the drama, which is a remake of the Hong Kong hit Infernal Affairs. The film will star Leonardo DiCaprio as a Boston cop working deep undercover as a soldier in the Irish-American Mob and Matt Damon as a Mobster who’s infiltrated the Boston police department. Alongside the dueling moles, the picture will feature Nicholson as an Irish-American crime boss. The cast also includes Damon’s fellow Boston native Mark Wahlberg. One more major role, that of a female police psychologist, has yet to be cast before the film begins shooting in April.