This gambling movie is based on Ben Mezrich's bestseller Bringing Down the    House: The Inside Story of Six M.I.T. Students Who Took Vegas for Millions,   which pretty much explains the plot. Kevin Spacey is a math professor who        trains a handful of students, chiefly Jim Sturgess and Kate Bosworth, to       count-cards in order to siphon a small fortune out of Vegas. Odds are they'll  get their comeuppance.                                                         Robert Luketic---USA---2008---123 mins.