Had the dragon music kick in and I went into Inventory to equip my bow. Before I could notch an arrow the dragon fell out of the sky and died in front of me. Must have scared him to death.
Close to the same thing: Was sitting on some rocks at night, trying to get my bearings, and down below me a dragon lands with his health bar almost empty (I'm assuming he came from another fight?). Promptly unloaded two arrows into him and BAM! Another dragon soul.I had three hired thugs come at me when I was trying to take down my first dragon on the main storyline, RIGHT AS THE DRAGON LANDED. I must have died at least 10 times before I figured out a way to run them in front of the dragon and let him take care of them

And they were hired by the family of a hunter I killed outside of Riverwood. There were no humans around, so I can only assume that a wolf or fox, etc saw me and took out a bounty on me

I must be blind, because I haven't found any of the Shadowmarks books in the Thieves Guild, but it's cool to check the houses for marks now

I'd still love to have one of the books in my inventory instead of checking it out online while I'm playing, though.