head bobbing while running
cant cast spells while equipped with a weapon/shield in that hand
shadows on everything (biggy for me)
HDR looks improved
they didnt place the game in kitty or lizard land (another biggie for me)
water looks better
from the screenshots it looks like the nord women at least have nice boobs
they havent shown much of the equipment and gear but it looks more down to earth and less goofy than oblivion was. the robes worn by they guy in the trailer have pouches and look more utilitarian and less gawdy
skyrims snow, while not nearly as good as minecraft, are at least particles and have some physics
the mountains are steep and very high looking and are a HUGE improvement over oblivions hills
the game world appears to be seperated so you cant see from one side to another
textures look better than console version of oblivion so im assuming that the PC textures will be better than the PC version of vanilla oblivion as well
they put pants on the giants (the only kind of "wood" i want swinging around my face in the wilderness should be branches) <_<
jobs (this is a nice touch, i just hope that you cant abuse them and get tons of gold)
levelling system closer to fallout 3 than oblivions
ability to sabotage buildings and local economies
companions (loved them in the fallout games and i used mods in oblivion and morrowind)