Just thought I'd rank all the episodes - for fun Here's my list, from least favorite to best:
9. His Last Vow. It's too dark for my taste, but that being said, it probably has some of the very best scenes and best performances.
8. The Blind Banker
7. A Scandal in Belgravia
6. The Great Game
5. The Empty Hearse
4. The Hounds of Baskerville
3. The Reichenbach Fall
2. A Study in Pink
1. The Sign of Three
Overall favorite series: The second.
Might change my mind at some point, who knows
What do you think? I predict that most people like HoB less and ASiB more than I do.