The movie "21," which opens in theaters March 28, was mostly filmed at Las Vegas'
Planet Hollywood Resort & Casino (3667 Las Vegas Blvd. S.; [866] 919-7472, www.planet hollywood.com). The film is based on Ben Mezrich's 2002 book, "Bringing Down the House: The Inside Story of Six M.I.T. Students Who Took Vegas for Millions" and stars Kate Bosworth, (left) Kevin Spacey and Lawrence Fishburne.
