"Nine" was the first. The film, not the musical, and I've never seen "8-1/2" so take that into account, too? Of course I had to look up info about all three.
Interesting: Fellini made "8-1/2" at 42. The musical has the director having his midlife crisis at 40. The movie has him at 50. Of course, Daniel Day Lewis was 52, at least in the year of its release.
Interesting: A movie that has Sophia Loren, Judi Dench, and Fergie? Who'd have thought. O_o ("Black Eyed Peas" Fergie, not the Duchess. Some might need to know.)
Interesting: Sophia Loren was actually in Fellini films. I wonder what she thought of it.
Interesting: Self-referential. Guido Contini can't come up with a script for his supposed movie. This movie has great stars, great acting, great story, but an absolutely terrible script. Seriously, the writing is cliched at best, sometimes painful. Unfortunately, that can include the lyrics. But "Cinema Italiano" is the essence of earworm.
The second film was "Billy Liar" which had been billed, according to my husband, as a "raucous comedy." Er... no. Good movie. Bad categorization.