MICKEY BLUE EYES opens. Directed by Kelly Makin. Written by Adam Scheinman and Robert Kuhn. Lightweight, grinningly diverting rom-com with Hugh Grant in full befuddlement mode as an Englishman in New York who gets to sample some goombah hospitality when he finds his betrothed is the daughter of a Mafia kingpin (James Caan). With Jeanne Tripplehorn, Burt Young and James Fox.