Offstage, a Beastie Boy Enters the World of Independent Film

Every day the Beastie Boy known as MCA, who spent years rapping aboutgirls and parties and the five boroughs, goes to work in an office.Sure, it's a cool one: the former headquarters of the Benjamin Moorepaint company, it is a loftlike space filled with surfboards,skateboards, flea market paintings and his fellow Beastie Mike D.'srecords; the attitude is dot-com casual. In this atmosphere of dudes,MCA has become the Boss