I really think Skyrim's going to become "The Game" for me, and it has all of the elements I've always wanted from a fantasy/roleplay game (and I've only visited Whiterun and Solitude).
It's not just the complete and utter "wow" sensation it gave me when I played it for the first time. That happens
every time I start playing it, multiple times per session.
This game just doesn't seem to lose that "new car scent" like the rest of the games I've played recently. The main difference is the hand-made feel. You just get the feeling that this game was made with passion.
And then there's the fact that I've only travelled through a quarter of the map's size. Given how much sheer content there is in the game, even in a small area like Riverwood, the game won't run out on me anytime soon.

Of course, it's hard to compare Skyrim to some of my all-time favorites like the original Fallout and FO2 because of the nostalgia factor, but Skyrim does indeed have that special feel to it that I haven't felt in a long time.