Before Sunrise is in my top 10 films of all time, i absolutely love it and it makes me go all gooey every time i watch it. There is one particular scene which makes me giggle like a gurgling toddler (anyone who knows me knows that this is my very contented laugh reserved for moments of supreme contentedness). This scene is here, for your enjoyment, and to make you gurgle too.
No context is really needed, and if you haven't seen the film then go out and watch it right now. Basically they met on a train and spend the evening walking around Vienna. This scene takes place about a third of the way through the film, when they are still getting to know each other.
If i can direct a scene as perfect as this one, i'll be a happy girl.
Hope that made your day a little brighter.