WoW & Diablo.
Diablo: levelling a second Witch Doc, because I can. Also working on a Wizard and a Demon Hunter. The latter of which I find a real riot, due to the speed buff.
In WoW I'm working on adding another 2 level 90 characters. I've got 3 at the moment (Shaman, Mage, Priest) and really want to get my warrior and warlock up there too. Then after that it's probably either my DK or my Paladin.
Watched Blizzcon live and it was AWESOME.
Hearthstone and Heroes of the Storm look great, can't wait to play them. Blizzard embracing free-to-play is very exciting. Can, not, wait.