I think I'd rank the movies like this...
1. Prisoner of Azkaban
2. Goblet of Fire
3. Deathly Hallows Part I
4. Half-Blood Prince
5. Order of the Phoenix
6. Chamber of Secrets
7. Sorcerer's Stone
I'm going to watch all of them within the next two weeks, so that may change.
SO excited for the finale. I want to watch it at midnight but I don't know if I can get people to go with me. Ugh. I think this is one of the only series where I've seen every single one in theaters.