Right now I seem to be unable to enjoy my standard fare of games and have this really weird urge to play some medieval/fantasy RPG. Now I only own a few of them and I've beaten the tar out of each one of them and after the six millionth runthrough they get a little tiresome (but not portal for some reason

) and I'm in need of suggestions. I bought oblivion for the 360 a while back (before I had a not ****ty computer) and I thought I could get into it again but I forgot how much balls it sucked and I went to go download it on the computer (yes download, because I already payed for it once and I'm not paying for it
again just for access to the
free user generated content thats better than the game itself) but I couldn't find a torrent less than 4 gigs or that downloaded faster than 8kbps. Then I remembered morrowind was supposed to be way better and more immersive and I got it and modded it a whole bunch and I played it for an entire day. There were actually a few moments I really enjoyed in it and I got really into it for a couple of minutes, but in the end, the endless dreary fog, muddy brownness, boring combat and swampy coastline made me feel depressed and idle and I don't really want to go back to it.
So now I'm asking this, does anyone know of or have played any really good, immersive role playing games that have perhaps slipped under the general publics knowledge? Anything thats like oblivion but doesn't suck at everything it tries would be great, but honestly, just about any genre will do now. Any ideas would be appreciated.