Title: Smile (Katy Perry song)
Content: Brandon Bonfiglio - executive producer ; Josh Chesler - story ; Jeff Cronenweth - director of photography ; Mathew Miguel Cullen - director, story ; David Goldstein - 1st associate director ; Andrew Lerios - producer ; Ivan Ovalle - post production supervisor ; Luga Podesta - executive producer ; Alex Randall - production supervisor ; John Richoux - production designer Adapted from YouTube. 
Title: The Smile (Homeland)
Content:  The episode was co-written by executive producers Alex Gansa and Howard Gordon, while executive producer Michael Cuesta directed.
Title: Smile (musical)
Content:  Smile is a musical with music by Marvin Hamlisch and book and lyrics by Howard Ashman. It was originally produced on Broadway in 1986. The musical is based loosely on the 1975 comedy film of the same title, from a screenplay by Jerry Belson.
Title: Smile (The Emotions song)
Content:  Smile was produced by Maurice White who also composed the song with Al McKay. The single's b-side was a song called Changes. Both Smile and Changes came from The Emotions 1978 studio album Sunbeam.
Title: Smile (Nina Girado album)
Content: The 33rd – producer, mixing ; Nikki Cunanan – vocal recording ; Dane DeViller – arranger ; Jörgen Elofsson – arranger ; Andy Goldmark – arranger ; Neil C. Gregorio – A&R administration, producer ; Sean Hosein – arranger ; Ricky R. Ilacad – A&R administration, executive producer ; John Keller – arranger ; Mike Luis – producer, arranger, programming, mixing, vocal supervision ; Ferdie Marquez – producer, arranger, mixing, sequence and programming ; Arnie Mendaros – vocal supervision ; Stephen Oberhoff – arranger ; Rudy Pérez – arranger ; Mark Portman – arranger ; Radha – vocal supervision ; Allan Rich – 
Title: Smile for the Camera
Content:  The film has an original musical score by Timo Ellis and Jordan Galland. The title song, "Smile for the Camera", was written by Galland and Sean Lennon, performed by Domino and Jemima Kirke, and produced by David Kahn. Additional music was created by Adam Crystal and David Mueller, former bandmates of Galland in the rock band, Dopo Yume.
Title: Smile for the Camera
Content:  Smile for the Camera is a short 2005 independent film. It was directed, produced and edited by Jordan Galland, who co-wrote the story and screenplay with Sean Lennon. Galland and Lennon also wrote the theme song, which was performed by Galland's Domino bandmate Domino Kirke and her sister Jemima Kirke. Although the film's cast, with the exception of Erika Thormahlen, had no previous acting experience, Milla Jovovich and Sean Lennon make cameo appearances as "Boxheads". The film has been released on DVD.
Title: Smiley Smile
Content: Al Jardine ; Mike Love ; Brian Wilson ; Carl Wilson ; Dennis Wilson ; Bruce Johnston ; Additional musicians and production staff ; The Beach Boys – producers ; Chuck Britz – engineer ; Jim Lockert – engineer Per David Leaf: The Beach Boys
Title: Smile (2005 film)
Content:  Smile is a 2005 drama film written and directed by Jeffrey Kramer.
Title: Smile (musical)
Content:  The original 1975 film was directed by Michael Ritchie with a screenplay by Jerry Belson. It starred Barbara Feldon as Brenda DiCarlo, Nicholas Pryor as Andy DiCarlo (Brenda's husband in the film), Bruce Dern as Big Bob Freelander, Geoffrey Lewis as Wilson Shears, Joan Prather as Robin Gibson, Annette O'Toole as Doria Hudson, Melanie Griffith as Karen Love, and choreographer Michael Kidd as Tommy French. The movie was filmed on location in Santa Rosa, California with the pageant festivities at Veteran's Memorial Auditorium.

Question: Who was the producer of Smile?
Answer: Brian Wilson.
Brian Douglas Wilson.