A scene of topless women (not seen in the original TV broadcast) was added for the VHS video release.
During the scene that amalgamates the story of the recording of Pet Sounds and Smile, Brian Wilson suggests to Mike Love that if he doesn't like the music then he can "collaborate with Pop on The Many Moods of Murry Wilson." The Many Moods of Murry Wilson was an album of schmaltzy instrumentals that the Wilson Brothers' father released in 1967, which includes two instrumentals written by Murry's plumber friend, a remake of The Beach Boys' "The Warmth of The Sun," and Beach Boy Al Jardine's "Italia," among others.
David Marks is left out of the movie. He was the rhythm guitarist, not Al Jardine. Jardine quit after the recording of their first hit, Surfin', replaced by Marks, who played on their next three albums before Jardine's return.