Thank you for this article - hadn't read it yet and it's quite touching! These two movies are among my most favorites, and I was thinking today that I haven't seen them in over a year. So I was really happy to find this thread.
I love both films so much; they're 10 times more romantic and emotionally truthful than the slew of more generic rom-coms out there that are made all the time. Maybe because I'm now closer to Jesse and Celine's age in Before Sunset that movie in particular really, really speaks to me. The ending is pure genius -- I didn't want to leave them.