Skyrim Deep Cuts: What have you discovered that you think others may not know about?

[Teccam]

Skyrim is, of course, a massive game. So massive, that despite most of us having played hundreds or even thousands of hours, we probably all still have some undiscovered secrets waiting somewhere out in the world. So I'm making this thread to ask you all: What have you discovered in Skyrim that you think others might not know about?

This could be a secret encounter or area, an easter egg, a unique line of dialogue or encounter, etc. I'll start with a couple:

• Forgotten Vale Paragons. In the Forgotten Vale, there are five paragons that unlock small secret areas in the vale. Each paragon is carried by a frost giant, and you can use the paragons to access new areas with new giants and loot.
• This is a pretty well known easter egg by now, but if you shout at the big glowing orb in Blackreach, a unique named dragon will emerge.
• Another pretty well known one, but to optimize Stamina use, never let your bar drain all the way to 0 -- this causes a delay of several seconds before regeneration begins. If you run down to 1, it begins to regenerate immediately.
• The spectral assassin you unlock during the Dark Brotherhood is the ghost of Lucien LaChance, a former Speaker in the Brotherhood who was your mentor during the DB quest line in Oblivion. It has the same voice actor and he alludes to Oblivion a couple times. He also has unique dialogue if you summon him before deciding whether to kill or spare Cicero (he advises you to spare him).

So how about you guys? What are some things you've discovered that you'd like to share?

[Ramses the Rad]

After completing 'Horn of Jurgen Windcaller' you can return to Jurgen's tomb; activate it, and recieve a dragon soul.

[Curse]

Most people skip straight along to Volkihar castle after freeing Serana. What most folks don’t know is that you can take her to Fort Dawnguard to see Isran beforehand, and he himself will suggest returning her to her castle to see what the vampires are up to. 

[Chris Diokno]

Huh, interesting.

[Percival]

I discovered this a little while ago and have a build in the works using it. If you get 5 Amulets of Talos, a follower and the Beast Form power, you can go out into the middle of nowhere to avoid bounties and press the transform button at the same time you press the interact button on your follower. It might take a few tries ut if you get it, you should be in the talk menu while in werewolf form. After the tranformation sequence is complete, pick the trade option. Give your follower the 5 Amulets and then take them back USING THE EQUIP OPTION. If everything went well you should now have 5 Amulets of Talos equiped and 100% Shout Cooldown. 

Note: This works with other armor pieces too. I'm not sure if you can do the glitch with Vampire Lord form but I'll test it.

[Chris Diokno]

Ah yes, thanks for notifying anyone who didn't know how to do this. This is a pretty well known glitch by this point, but thanks for the reminder

[Histcarp]

You can block with unenchanted, basic staves by equipping them in the left hand and nothing in the right. They can proc quick reflexes, and can bash, although enemies aren't actually staggered unless its a power bash. I almost made a monk build around this, but the damage is quite weak unless you go the whole minmaxed unarmed setup.