The opening of the film depicting Gilligan hitting a gong was a play on the J Arthur Rank film studio opening.
When the castaways are making their silent movie, Ginger Grant says, "Don't forget to photograph me from the left, Gilligan." In real life, Hollywood actress Claudette Colbert also always preferred to be filmed from her left profile.
According to Gilligan the world kissing record was held by Skinny Mulligan and Florence Oppenheimer. The kisses for 6 hours 12 minutes and 13 seconds. They achieved this when their braces locked while chewing bubblegum.
In the final scene where the castaways are all huddled around the radio, the announcer begins the broadcast with a sports report where one team "squeaked by" the other for a crucial win with a score of 93 to nothing.