Your 25 cents (in New York City and its immediate suburbs) buys so much in today’s Post. Besides the gory details of a Greenwich Village shootout straight out of a Sidney Lumet movie, you can exclusively learn from Page Six why Quentin Tarantino and Robert Rodriguez’ ultra-violent “Grindhouse” may have trouble getting an R rating, discover the positively shocking reason why Kyle played hooky from the movie beat to review a children’s puppet show in Central Park and get Sara Stewart’s inside scoop on how Cillian Murphy avoided having his teeth pulled out with a pair of pliers for “The Wind that Shakes the Barley.” Well, maybe you should wait until after breakfast for the last one.