Well, I finally hit 70 with my main World of Warcraft character.  It was kind of exciting, because there is a lot of content there in the game that I can only just now start to participate in.  But my actual first response was to create a new character -- Horde PvP, as far away as you can get in the game from what I've done so far.  I just really enjoy the leveling up game, and while WoW has many proxies for that activity (gaining gold, gear, reputation), somehow it isn't the same.

Also, this music video from Blizzcon is possibly my favorite thing from WoW ever.

http://media.worldofwarcraft.com/blizzcon/iammurloc/iammurloc_en.html