Some observers speculated that Dirty Story represented departing artistic director Donovan Marley's raised middle finger to the Denver Center Theatre Company. Others viewed it as an intelligently provocative selection. Either way, it was a brilliant choice. The production transformed the Israeli-Palestinian conflict into a sadomasochistic relationship between a middle-aged English professor and a bright young student, with a dopey, gun-twirling cowboy periodically erupting into the action. There was something in it to offend both Jews and Palestinians, and plenty there to make all of us think.