Oh, and rotating the world map, that was recently discovered.
Wait, what? You can rotate the world map?! HOW?!

You have to be trolling... You can move bear traps, too!?!?!??!?!?!?
I've heard you can also throw them at enemies with telekinesis. Should you ever feel the need to use other, quite unique, weapons.
Shooting torches out of their brackets was something that surprised me early on. After that, I looked for more things to shoot, just to see if it would work. A useful technique when in dungeons with arcane traps!
Ahhh ... haha yeah yes of course, I knew about that!
*runs off to try it out*
I just started a new character and have been trying to actually role play... so after a long day roaming around catching butterflies and picking flowers I retired to the Bannered Mare for some Mead.
I went up to my room and sat on the balcony to listen to the bard and heard Hilda exclaim "Saadia wake up dear!" "Yes ma'am." And a few seconds later Saadia comes to take my order. Lol. Nothing stopping me from going downstairs to buy Mead but having someone wait on me made me say "Bow to the Dovakhin!".
Yes, often when you take a seat in an inn, the owner will command the tavern girl/boy to go take your order, which they do.
Oh yeah, and I see a lot of people not knowing sprint works for horses. Do you realize jump works too? And if you don't move with the horse and press the jump key, it'll "stand on its hind feet" (I can't recall the right term for it).