Is truly a gem, one of a kind game. I have the rxaa tool, a couple of water/terrain/city upgrade textures, and a mod that gives 500+ different environmental/weather changes through out your play through. It's seriously beautiful game and runs extremely smooth. I got to level 18 from level 1, had a day off on Friday.
I put ~200 hours or so into the game on the 360 from Nov 2011 to Feb 2012, and I honestly don't know how I am addicted to the game again on PC. I have nothing but Skyrim on my mind all day, sounds sexy.