Brick
its a high school film with a twist...its a neo-noir, hardboiled detective story set in high school.
its got a bunch of semi-well known teen actors from shows like Heroes, 3rd Rock from the sun, Lost, Roswell, etc.
Entertainment Weekly voted it as its 37th best high school film, even though its only been out a year.
its influenced by The Maltese Falcon a bit, and has many references to it