I play it on and off when we\'re not raiding in WoW. I just got into the thieve guild yesterday and got my 1st trial quest to get into the dark brotherhood.
Very cool game
Beside mods and prettier graphic, another good thing about PC version are the tweaks. There are a lot of kickass feature in the .ini settings that you can enable to enhance the graphic (like you can decide which object type reflect on water and which dont such as Trees, building PC, NPC etc..) you can adjust the transparency in the water etc..etc..
Beside a few glitch here and there, this is a great game. The wait since morrowind was well worth it !