text: gainey ) - would unearth a seedy world of drugs and violence , ultimately revealing a motley crew from la 's underbelly including ex-con david lind ( dylan mcdermott ) , nightclub impresario eddie nash ( eric bogosian ) , the most unlikely of american heroes - porn legend john holmes ( val kilmer ) - holmes ' estranged wife sharon ( lisa kudrow ) and his teenage lover dawn schiller ( kate bosworth ) . ``