Both Bad Santa and the Bad Lieutenants (Keitel and Cage) were really bad, but they were entertaining. Cameron Diaz's Bad Teacher, Elizabeth, is neither. Sure, she swears an awful lot in front of her learning-starved (and blandly cast) middle-school students, and she talks endlessly about getting fake tits, but that's just it — she's all talk and no action (the film's big sex scene finds her fully clothed and dry-humping). And will anyone sitting through this slog actually believe the lazy money-grubber will augment her perfectly perky B-cups to attract an overly agreeable imbecile like wealthy new teacher Scott (Justin Timberlake, Diaz's real-life ex)? That scenario's about as likely as Elizabeth ending up with doughy gym teacher Russell (Jason Segel) and discovering she's a good teacher after all, but this doesn't deter director Jake Kasdan from arriving at this bad ending.