A number of the cast and crew had worked on the comedies of Mel Brooks. These included Gene Wilder, Dom DeLuise, Carol Arthur, Jack Riley, Fritz Feld, Frank Baur, William Tuttle and John Morris.
Though Gene Wilder's character real name is Rudy Hickman who parades as Rudy Valentino, the character is billed as only Rudy Valentino in the closing credits with no mention of Rudy Hickman.
Carol Kane was made up to resemble silent film star Zasu Pitts. Kane also appeared in another movie about the silent era released in the same 1977 year. That movie was Ken Russell's Valentino (1977). Both films featured Rudolph Valentino in their stories.
This film is supposed to take place in the 1920s silent movie era, yet the movie extras riding in the bus to their location sing-along to "Shuffle Off to Buffalo", a Harry Warren-Al Dubin song written for the 1933 sound film "42nd Street."
Annie Hickman: Rudy, you do stick out your tongue when you get nervous, or sometimes you get laryngitis just for a second. But it won't last. These are just little nervous habits because you're so high-strung. They mean nothing. Even the third thing.