Season 4 Episodes Ranked By Me *UPDATE*

1. LONDON CALLING
2. Million Dollar Smile
3. Blackout
4. Be Shure
5. Fire & Nice 
6. Smokin' Hot
7. Chica & The Man
8. All The World's A Stage
9. The Weiner, The Bun & The Boob
10. Back In Her Place
11. The Passion Of Betty
12.  Backseat Betty
13.  Level (7) With Me
14. The Bahamas Triangle
15. Plus None
16. Blue On Blue
17. The Butterfly Effect part 2
18. The Butterfly Effect part 1 

London Calling was just amazing- truly great writing, nice moments as well as a bit of drama thrown in. But I definitely preferred the first 12 episodes in that order, more than the last 5.