BELOW WILL BE SPOILERS
Well, we all knew Katherine was back and part of me was really happy that she tried to hurt John. While I love David Anders, but I'm so ready for John's departure.
And with the end of last season you expected for Jeremy to end up a vampire only that didn't work and then you started to suspect someone else was going to be turned. So you wonder about John and Jeremy. Then you start wondering about Caroline and things just go nuts.
Mostly I think Katherine made everything nuts but still! Damon was clearly spinning out of control over the whole thing but I loved the moment between him and Elena when he told her they kissed and then he realized it was Katherine. Also, totally in love with the moment he told Stefan. So great.
The end though. Damn. I can't believe Damon got so emotional because of Elena and Katherine and then killed Jeremy. Yay he was wearing the ring but wow. I can't believe he did that to Elena. And her profession of hatred for him. Man. And we thought Damon was starting to turn around a little.
Also, um... what is up with both gals thinking Stefan is the be-all end-all. Hello, I'd rather have Damon. And who saw the shippy moment at the wake with Damon and Bonnie. I mean if she can get over her hatred of him... just a thought.