Xenoblade Chronicles.

 Spoiler

Finally finished the story, took 102.17 hours. I did a lot of the sidequests which did take a huge chunk of time but thats just another good point to the game. The amount of side questing and time you could spend just exploring was amazing. I still haven't explored several of the higher level areas yet, and am still missing a couple of skill trees, as well as a monado skill.

The one addition I think it could have done with is a quest helper to let you know which npcs have a new quest for you, other than that no major improvements the game could have done with spring to mind (other than graphics obviously, but it's a wii game so it did well enough on that front by making up for what it lacks with a fantastic art direction)

Without a shred of doubt, Xenoblade is the best RPG I've played in many years. Nintendo America is really really screwing up. I'm expecting it to get several GOTY nominations at the very least.