Excuse me, but I think you just violated your own rule. I know that you have too much integrity to do that, so I'll ignore #9. Besides, it makes no sense to accept Fellini, Almodovar, and "Crouching Tiger Hidden Dragon," but exclude all the fabulous movies from England, starting with the early Hitchcocks and Agatha Christie adaptations. Oops I guess I violated the rule too. I'll stop if you will. ^_^
You people are way too serious. Hardly any comedies and I didn't see a single musical on anybody's list. Lighten up!
My list:
Bedazzled (The original 1960's British masterpiece, better dialog and better humor than the remake)
Being There (It's a crime that Peter Sellers never won an Oscar)
The Dark Crystal (Lots of good sci-fi and fantasy listed here, this one has a good story, universal truths, and the best alien milieu ever filmed)
Monty Python's "The Meaning of Life" ("Every Sperm is Sacred" is one of the best production numbers ever staged)
Yellow Submarine (a tough choice between this one and "The Wizard of Oz")