Filmmaking represents a distinctive form of group creativity in which many individuals contribute to a single creative product. This exploratory investigation examines these contributions in 1,327 English-language, narrative feature films. Besides control variables, the measures included 2 criteria of impact (Best Picture honors, movie guide ratings) and 16 assessments of outstanding cinematic contributions (direction, male and female lead, male and female supporting, screenplay, art direction, costume design, makeup, cinematography, film editing, score, song, visual effects, sound effects editing, sound). A factor analysis showed that the contributions formed 4 creative clusters: dramatic, visual, technical, and musical. Hierarchical regression analyses indicate that a film's impact was a positive additive function of the dramatic and visual clusters, with the dramatic having the primary role.