My third character hit level 80 this past week! As I have mentioned before, leveling a priest is a chore! I'm glad its over =) I have dual specced her with 2 healing specs: Discipline & Holy. I was able to heal a Naxx run with my discipline spec & had a lot of fun. Only thing is that discipline does not fair to well on the healing meters since a majority of its healing power comes from absorbing damage. I hope to find a mod that will give me a better idea of how I'm doing.
I'm still working on my horde Paladin. He is level 77 now. On the alliance side, I have started leveling my mage, who is currently level 74.