The eppy where Stefan goes into full-blown vampire meltdown mode at the Founder's Day party (of which I guess there will be several) was my favorite yet. No zapping at all!

Paul Westley did a great acting job. I knew that Stefan could be a terrific character when the writers finally let him get unwound.
If I understand the logic of why Stefan is having a bigger issue of drinking human blood without going into full vamp mode than Damon, it was a very bad idea for Stefan to go without for so long. It would have been better to start robbing blood banks whenever it was that they first started being established. Poor guy, he was just trying to do the right thing but I guess there's no manual to being a vampire.
Not sure what I think about the immortality ring on yet another character (Uncle John). Those things are too conveniently a get-out-of-jail-free card. At the very least, there should be a limit on the number of times they will resurrect someone. It would be cool if the ring changed to indicate how many lives were left.
What the heck happened to Bonnie? Is she in some kind of witch retreat to get over the death of grandma?