Glitchiest game EVER!!!!
Good things: The characters are more developed, they have more personality and have more details they didn't have in Oblivion. Also, the artifacts, weapons, apparel and other items are more detailed here. Another good thing for me was the character creation; while in Oblivion I had the option to select a pre-selected character or create it from scratch even how far his eyes are from each other and every little detail from it. So, if you have the talent it can be an awesome character, but if you are like me, you could ended with an imperial with orc characteristics; not a pretty image. Now in Skyrim they limited the things you can change to create you character. And my favorite from both games, it's almost an infinite source of game-play, specially if you like to do everything that there is to do in the game.
Things that stayed in the same difficulty at the end: The only thing I can think of for this category is the leveling process. In Oblivion every time I level up I have to select 3 stats from like 8 or 9 to increase and depending on what I select, the health, carrying capacity, stamina o magicka increase; Skyrim go directly to the point, I just have to select an increase in health, magicka or stamina that also increase the carrying capacity. But, I have to assign a perk point to a perk from every skill. In Oblivion, those perks came automatically with the skill level. Here you will interact with the thieves guild, the dark brotherhood, some kind of mages guilds. There is no fighters guild, but there is the companions, there are almost the same except that the companions are mercenaries for hire. And of course, there are some other small factions you can be part of.
Awful things: The environment looks a little bit backwards than Oblivion. Every gamer expect that with every sequel the game change something, but in some way it gets better; not with Skyrim. This game has more glitches than the ocean has salt. There are some that doesn't let me finish some quests there are others that freeze the game, or makes annoying stuff in the game interface and some makes the game doesn't recognize that you did something that is supposed to be awarded by a trophy or even make the game destroy items that it doesn't suppose to be destroyed and that make you get stuck and not able to get out of the area or finish the mission like I said.
The story is like a movie. the main story line and the side quests developments keeps you going to see how the story gonna end.