To the Editor: The National Cancer Institute reported that “the total weight of evidence from cross-sectional, longitudinal, and experimental studies indicates a causal relationship between exposure to depictions of smoking in movies and youth smoking initiation.”1 Attributable risk estimates suggest that movie smoking accounts for one-third to one-half of adolescent smoking onset,2,3 raising the possibility that trends in movie smoking could influence trends in adolescent smoking. We compared current (past 30-day) smoking among US eighth-grade adolescents with smoking in popular movies.