I will say I wasn't a huge fan of the witch plot line in season 4 but loved Eric and Sookie being together, even though he was under a spell. I also appreciated her saying goodbye to both of them.
I really liked that season 5 did not bring in another "sup" like were-pandas. Then it would have been plain ridiculous. Instead, they had a very interesting plot ending in the demise of the Vampire Authority and the rise of Bill as, well, as something probably pretty powerful. I really liked learning more about the fairies and finding out Sookie's parents were actually murdered by a vampire and didn't drown in a flood. The subplot of Terry's curse was forgettable. Give Arlene a break. Turning Tara into a vampire was a good twist. It's about time she has an outlet for her rage. I'm glad Hoyt has gone north to Alaska. He's a weak man and was annoying me. Oh, and the hate group killing "sups" made sense. It was about time something like that happened.
Overall, great season. Now just to wait for season 6 to come out on DVD, and the final season, 7, to start this summer.