Cowboy Bebop: The Movie, known in Japan as Cowboy Bebop: Knockin' on Heaven's Door , is a 2001 Japanese anime science fiction action film based on the 1998 anime series Cowboy Bebop created by Hajime Yatate. Several staff from the original series worked on the film, including director Shinichirō Watanabe, writer Keiko Nobumoto, character designer/animation director Toshihiro Kawamoto and composer Yoko Kanno. The Japanese and English voice casts also reprised their roles from the series.