So I got a copy from the Magical Underworld Store, and I have to say... holy cow. I really wasn't *at all* in an Oblivion mood. I just got off a huge Oblivion stint really not all that long ago, and I was feeling pretty done with it for a while. Have had lots of other work to focus on and such. Anyway, I decided I wanted to at least just see some of the new stuff for a little bit before I set the game aside until my next stint... but immediately upon entering the Shivering Isles, I was hooked anew. It's just so... awesome! I should have realized that it would get me going, but I just didn't think it would happen like that. Reminds me so, so much of Morrowind, which is by all means a good thing. Very exotic.. lots of swamps, huge mushroom things, crazy creatures. And it's huge! Just in the little opening area where you start I noticed forts, dungeons, a settlement, a billion and a half new ingredients all over the environment... it's just plain great.
If you're looking for an excuse to go back to Oblivion, this is it. And it might be it even if you're *not* looking for an excuse to go back, like me.