by Mike Krumboltz Who says February is Hollywood's dumping ground? Two of history's greatest filmmakers have new releases opening in theaters this weekend. Martin Scorsese , the director behind " Gangs of New York ," " The Aviator ," and " The Departed ," unleashes the psychological thriller "Shutter Island," his fourth collaboration with Leonardo DiCaprio . And in limited release comes "The Ghost Writer," the latest film from controversial Oscar winner Roman Polanski .