I downloaded Dawguard and haven't touched it yet, either. Once the patch comes out, I'll probably download Dragonborn and keep playing the game to level up my dude. There's only so much random questing you can do before it gets a little stale.
Still have yet to get Dragonborn, but I just got a new GPU for my computer. Now my Skyrim looks like this: (Spoiler'd 'cause I added more pictures) Spoiler