Sharply observed Manhattanites, with their books and wineglasses and articulated hang-ups, offer a welcome distraction from the underdeveloped sex comedy at the heart of this thin but casual DV feature by Gary Winick (producer of Tape). A Voltaire-quoting prep school student well on his way to premature ennui (Aaron Stanford) heads home for the Thanksgiving weekend with romantic designs on his elegant stepmother (Sigourney Weaver), but his plans backfire after he falls drunkenly into bed with her predatory best friend (Bebe Neuwirth). Both Stanford and Neuwirth are excellent in tricky parts, yet screenwriters Heather McGowan and Niels Mueller abruptly end the story just as the characters are arriving at some uncomfortable showdowns. With John Ritter as the boy's father, not exactly stretching as an apartment dweller befuddled by strong sexy women. 78 min.