I've got a rather large backlog myself. See my sig below. I found a neat website to help me keep track of them all.
http://www.backloggery.com
You have to manually enter each game, but all you're entering really is the name and which platform (PC, Wii, PS3, etc) it is for, and you can assign a status of "beaten" which is just completing the main story (or whatever your own criteria of beaten it is) or "completed" which is all campaigns/trophies/bonuses/secrets/etc done. I was kind of surprised/scared once I got them all in a list and saw how many games I literally just haven't played.
As for Final Fantasy XII, I played it and while they tried to make it like FFXI gameplay-wise...to me it was like they took more of the worse parts of MMO gameplay rather than the best parts, but YMMV.
