I did like this episode, but my real order would be this:

1. Tooth and Claw
2. the Beast Below
3. the Fires of Pompeii
4. Day of the Moon
5. the End of the World
6. the Shakespeare Code

Mine would be:
1. the Beast Below & Tooth and Claw
3. the End of the World
4. the Fires of Pompeii
5. the Shakespeare Code
6. Day of the Moon