I really thought this was a great episode. We finally got to see some background and as obvious as it was (and it really was) we now know that Catherine turned the boys. I wonder how Elena will react to finding out she's identical to Catherine!!
When Damon snapped Vicki's neck I was totally shocked. Ok it was softened by the fact that he was turning her into a vampire, but it did make me jump.
And now we have a third vampire in Mystic falls. It's going to get interesting having a new fledgling female vampire running amuck !
I think it was telling that Damon saved Stefan. As much as he protests, he still loves his brother.