Now this one is harder, but strangely the first one that came to mind was An American In Paris. There are so many films I love, so many I can watch time and time and time again, but this film made me wish so very hard that I could dance.
As a story in itself it works fine, boy meets girl, girl has weird relationship with other boy, girl decides first boy is much better option.
But then, at the very end of the film, there is 17 minutes of sheer bliss. Their story, the whole ideal of their relationship, is told in one long, delicious ballet. And my god, for the most clumsy, lump of a girl watching it, it was sheer heaven. (The Red Shoes almost had the same effect, almost but not quite.)
Sure I did the childhood thing of dance. Attended ballet but in its most basic form. I left when it became apparent that I just was absolutely no good at all, although as a hobby I would have liked to continue it was the shows that were excruciating. I am someone who needed everyone in the room to shut their eyes before I could comfortably play a tune on the piano (the Laurel and Hardy theme as well, it isn't even ironic.)
I wanted to be Leslie Caron though. I wanted, ached to be able to do that dance, to have such a talent that it looked almost effortless (but it took a month to film, you know there were some serious blisters going on there.)
So, for today at least, this is my choice of a favourite movie.