8½

8½ (1963) was shot, like almost all Italian movies at the time, completely without sound recording on set. All dialogue was dubbed during post production. Federico Fellini was known for shouting direction at his actors during shooting, and for rewriting dialogue afterwards, making a lot of the dialogue in the movie appear out-of-sync. (Source: High-def Digest)

When Guido visits the cardinal in the mud bath, the cardinal is sitting in a chair, fully dressed in his cassock, as two attendants use a sheet to form a curtain around him; however, as the camera cuts to a closer angle, the cardinal is suddenly undressed to the waist.

In the American theatrical release version, Rodgers & Hart's "Blue Moon" can be heard twice: the first time, when it's played by strolling strings near the shopping plaza where Guido meets up with his wife, Luisa; the second time, when Guido goes out for a drive with the "real" Claudia. However, in the original Italian release, the song played in both scenes is "Sheik of Araby." The Criterion laserdisc features "Blue Moon," but it's "Sheik of Araby" on the DVD, possibly due to the use of different source materials.