I remember watching Torchwood the first time around, when I was about 13. I decided to rewatch recently; currently halfway through season 2... Never seen Miracle Day or Children of Earth. Thought I would do a little ranking of the season 1 episodes. :)

1. They Keep Killing Suzie
   
2. Countrycide
   
3. Cyberwoman
   
4. End of Days
   
5. Out of Time
   
6. Everything Changes
   
7. Captain Jack Harkness
   
8. Combat
   
9. Greeks Bearing Gifts
   
10. Small Worlds
    
11. Ghost Machine
    
12. Day One
    
13. Random Shoes