Ever since I first saw this film, I knew it would be very hard to top it. And now, many years and viewings later, it is still my favorite film.

Why is that? I've wondered about this myself. It's not so much the stories, it's how they're put together. There are three stories that connect to each other at different points in the film. And they are split up and told out of chronology. This gives the film a very unique feel, as you are not quite sure who you're rooting for. The stories are about crime, and deal with murder and drug use. But you find yourself loving the main characters because among each other they seem to just be regular people.
All main character's are made interesting by the spectacular dialogue throughout the film. This film is practically made out of memorable quotes. I always find myself talking along with the dialogue because it's so smart, and yet its subject matter is usually not high brow. It's about the way the sentences are built up, it's about the way everything loses its edge when you switch some words around. This is truly where Pulp Fiction shines.
The actors always deliver their lines perfectly, emotions are wonderfully quickly interchanged and the characters are as such developed quite extensively. Samuel L Jackson and Harvey Keitel provide some very satisfying eloquence. While Quentin Tarantino and Amanda Plummer lighten the film at some point with some laugh at loud humor.
The violent scenes are contrasted with the main character's total apathy towards their crimes. I'm used to some pretty violent scenes in film, but if you're not, it might be hard to relate to the characters sometimes. But the pure style makes every minute of the film so enjoyable and so memorable that you're gonna wanna see this over and over again.