If you’re going to redo something, redo it right. Martin Scorsese takes the 2002 Hong Kong crime thriller Infernal Affairs and injects it with his inimitable, goodfella gusto. Leonardo DiCaprio plays a police mole trying to get close to Boston mob boss Frank Costello (Jack Nicholson), while Matt Damon plays a Costello man who has infiltrated the police. The cast is terrific – Nicholson does your standard, psycho Scorsese hothead, but as only Nicholson can – while the schizophrenic editing by longtime Scorsese collaborator Thelma Schoonmaker is demanding yet thematically brilliant.