Fifteen and pregnant! Riding in Cars With Boys ($7) follows 20 years in the life of Bev, a 15-year-old girl who dreams of becoming a writer in 1963. The movie starts with Bev getting pregnant at 15 and follows her through welfare, parenthood with a heroin-addicted husband, and semiadult resentment as her teenaged son takes priority over her ultimate goal of finishing college and publishing her memoir. You'll laugh. You'll cry. You'll love it.