+1
Before Sunrise.
Thought I'd get into this as the Trilogy has just been completed. Watched the first movie, and I'll give it a solid 7/10. I think at the time I would have given it a lot less if I thought it was a standalone production. But now I know there are 2 sequels, I can understand why the ending was as it was. 2 things stood out:
1) The willingness of the director to give the actors a bit of license. The long scene done in one take on the Tram was very well done. In movies like these, when actors talk over each other, and it doesn't detract from the scene it's a good sign.
2) The script. To make a film like this with such limited plot needs a really tight script. And it was.