Funnily enough, Disc Priest is the only healing spec that I really like playing. I was doing Horseman on my new level 14 priest and it was a piece of cake. Of course I make extensive use of mouseover macros and focus heals on the tank. Throw a few bubbles and light heals around, and penance the heck out of everything else. 
Even though I’ve got a level 60 paladin, and I do retribution and protection pretty well, I’ve got no clue on even how to start holy healing.