I am currently working on completing Skyward Sword 100%. However, I'm going all out for this one. I've completed Hero Mode, got the Hylian Shield, completed every side quest, found every Gratitude Crystal, gotten every upgrade possible, found every Adventure Pouch item, every Piece of Heart, and now I'm working on the final step: getting my collection screen full to capacity.
What I mean by that is I'm attempting to get 99 of every single bug and treasure in the game. I will not consider the game 100% complete until I've achieved that, too. My progress so far is as such:
It's a long road, but it's a lot of fun and it gives me something to do. I'm just thankful for the Moonlight Merchant; otherwise I wouldn't be able to get so many Goddess Plumes. He's great for getting the three rare treasures. I don't think I could do this without that guy.
... I feel like I'm going a little overboard on this 100% thing, though. And by god I have way too much free time on my hands.
I am currrently working on a bare completion of Ocarina of Time Master Quest on the 3DS and Skyward Sword, first run-through. I will be finishing Spirit Tracks once my sister gives it back to me and I will be starting A Link to the Past on the Game Boy Advanced Remake.