Fighting free from the monumental shadows of Woody Allen and Whit Stillman, Gary Winick's Tadpole—hewn from that same Upper East Side social milieu and following the vaguely familiar unrequited infatuations of Aaron Stanford's 15-year-old Voltaire-quoting, stepmom-fancying preppy—is 77 unapologetic and mostly witty minutes of romantic ephemera.