I intend to use this to post issues that should be (hopefully) short and sweet.

I. I ran an animation and am now stuck in third person

This does happen with the use of SexLab more frequently than I would like. None the less the treatment is "hair of the dog that bit you". That is, you need to run another animation. Sadly, more SexLab animations are very hit and miss. What tends to work better are the use of one of the Crafting stations or Mining. Any of these is likely to cause you to be able to return to first person when you exit from those animations. The consensus, and certainly my opinion, is that the Cooking function is the most likely (virtually 100% guaranteed in my experience) to get you back out of third person. So, if you have one handy (a Hearthfire house, an inn, etc.) then you should be able to walk up and activate it and then, without necessarily making anything, exit from it and regain your ability to go back to first person.

So, what if you don't have access to one? You're in the middle of a dungeon or the wilderness. Then, I suggest you use the console to add a cooking spit to your current location. You can do this by opening the console and typing

player.placeatme 68adb 1

and hit Enter. This will place the cooking spit RIGHT next to you. Activate it as above then leave it and you will be able to return to first person.

So, what if you don't want to clutter up Skyrim with cooking spits? Easy enough, when you're done with it delete it. Again, go to the console and this time, with the cooking spit marked on your screen type:

markfordelete

and hit Enter. To my surprise the cooking spit will disappear immediately and everything will be as if you had never done it.