I believe it will be a great step forward from oblivion, from what I see from the trailer, the player does an animation according to what you want to do, for example doing a finishing move on your enemy, or assassinating someone, a brilliant decision made by Bathesda, this would stop the tedious fights and have a more realistic move into melee fights.
I have not seen much, but I do indeed like their giant creatures they're doing (like dragons, and huge spiders) Unlike oblivion, your enemies had a size limit biggest one I'd remember would be the minotaurs they had, but yeah all the giant enemies had primitive movements.
I am really looking forward to it, I also hope they give the whole "free roam" movement after completing the game, because it'd be a big disappointment if they didn't.
Robogranny can you extend on what you have posted btw.