A couple of things happened to me the other night (I really need to get around to taking videos of these things):
As I was heading back to the road from emptying out another nordic ruin, I noticed some kind of ghost down the road heading towards me. Not only was it a ghost, but it was a mounted ghost and it was going rather fast. As it came close I assumed it was going to start up a conversation with me or attack, but it seemed as though it didn't see me, but then I noticed it had no head and the action text said "talk headless horseman" for a split second not giving me enough time to activate it. I had to take off all my heavy armor and sprint to try to catch up with him again. There I was, a redguard lady, running in my skivvies after a ghost. Once I catch up to him, he just disappears in front of a graveyard. I believe it was "Hamvir's Rest". I wonder if there's something I need to do with this horseman or if it just simply leads me to that grave.
That very same night, I went through an icy cave filled with draugr. Once I got to the end there was an opening out on to a cliff with a few stairs leading up to a ruin with cryptic letters on it. My eyes on the ruin, I failed to see the dragon perched on top of it until it was screaming in my ear in dragonspeak. As the fight bore on, he flew off and made a few circles around me before he decided to come in for another attack. Now, I'm not sure if he intended to ram me or if he made a crash landing, but he came in towards the cliff and then hit the ground a hundred feet in front of me headfirst and slid along in the dirt towards me until I believed my life was over from being hit by a freight train. Luckily he stopped just short of me seeming a bit stunned and I slashed the last of his life away. I'd thought this was a Bethesda glitch, but upon examining the scene I noticed he left a meteor sized landing strip dug into the dirt where he'd come barreling down. If I can figure out how to screen shot one of these days, I'll reload the save I made there and snap some photos for you guys. It was quite amusing. Has anyone else seen dragons behave this way?