I was near the Hermaeus Mora shrine and talked to the Khajiit there. He said I hadn't followed the right path required to speak to Hermaeus Mora or somesuch.
So I decided to find out what was required. I checked out the wiki and it mentioned someone named Casta Flavus. I'd just been at the shrine and there was no Casta Flavus there.
So I decided to find him. I opened the console and typed "player.moveto a4989". It took me to him, but what I experienced there reminded me of nightmares I've had. I'd been moved to a completely black, bottomless area. I happened to have an Illuminating Oaken staff equipped at the time to provide light. I was slowly falling in the blackness. Casta Flavus was hovering in front of me, lit only by my staff. He wasn't falling like I was, so I slowly dropped below him. Above him, there was a group of around a dozen or so other men, wearing only underwear, floating in the blackness like Casta Flavus*. As I dropped lower, the other men moved beyond the light of my staff. A few moments later, Casta Flavus went out of sight too. Then I was falling alone in the blackness.
So I decided to take a http://www.mediafire.com/i/?soedja93z09391q. It really doesn't do the situation justice. The best I can compare it to is the "lost souls room" from the movie Beetlejuice. If you've ever seriously contemplated - probably late at night, alone in bed - what falling down a bottomless pit would be like, you can probably imagine the unpleasant feelings this scene dredged up.
So I decided to make a post about it. There's a solid chance I'll get the heebie-jeebies later because of this.
If anyone else has had a disturbing Oblivion experience they'd like to talk about, feel free to use this thread.
Sweet dreams,
-cwineman
*Casta Flavus was not in his underwear. He was wearing blue robes. I just mean he and the other men were floating, not falling as I was. I'm not sure what kind of party they all were having, but I hope I'm never invited to one.