God, that's a hard one. I really fell in love with S9. It started out quite slow ( the first 3 episodes ), but after that I really got into it. But I guess 9x08, 9x11, 9x12 + 9x13 mark my favorites. I loved how Brooke got her happy ending with her parents in 9x12 and I thought she deserved an episode like that, and it got a special touch as Sophia herself directed it. And the other episodes...it felt so Haley/Nathan/Scott centric, and I loved every part of it. Joy nailed this season and I really think this is her best season so far. I loved the Xavier story-line, as it was pretty realistic that he came back ; and I loved to see Clay/Quinn deal with Logan. Every story-line this season...perfect. I mean...even Chase/Chuck got an exciting SL this year! I could have lived with a bit less Chris/Chase, especially in the finale, but other than that...kind of perfect. Seeing Lucas again...more Peyton/Lucas mentions or Karen/Whitey mentions. Everything came full circle this season and I loved every bit of it.