In 2009, it was announced that Watanabe would be working as an associate producer on the upcoming live-action adaptation of "Cowboy Bebop", alongside his fellow Sunrise staff members Kenji Uchida and Keiko Nobumoto. As of 2014, the project is in hiatus. During FicZone in Granada, Spain, it was reported that Watanabe was collaborating with anime studio BONES on a space science-fiction comedy. BONES subsequently confirmed that the studio was working with Watanabe, but did not confirm the genre of the series. In late 2013, the original trailers for "Space Dandy" were released to the public. The dubbed version premiered on Adult Swim on its Toonami block on January 4, 2014 in the United States, hours before airing in Japan. He is frequently ranked among Japan's best animation directors.