GOTY is a difficult thing to decide on especially in a year with a lot of great games that are all diff enough to repel some players and draw in others.
However I think skyrim has enough flaws "unintended ones" that it shouldnt get GoTY from a technical standpoint. I do NOT think that waiting for patches and modded content to "fix" these issues is a justifiable way to go about it. The games really fun, but if you play one char for any length of time, yes it becomes repetitive. its essentially a lot of free form eye candy with poor AI, a shoddy radiant AI system, some good/poor scaling, and plethora of other bugs and such.
every game has its flaws, but games that for me were better then skyrim.
dark souls-more precise combat, a more barren and intriguing story, sometimes bizarre but always unique art design, and some truly unique systems. it suffers as much as it gains from its hallmark "difficulty" as it repels as many players as it attracts. a amazing experience for those that can handle the difficulty and hard times. one of the best in years imo.
deus ex-ok, im partially biased here because i enjoyed that his homebase was in michigan

, but storyline wise whie it utilized some cliches it was also VERY intriguing as a good bit of it felt very tangible and believable. I also felt you could better customize how you char worked then skyrim...but this is because of skyrims inconsinstancy brought on by how you level up and level scaling.
portal 2-portal and this game are probably one of my fav games ever, it puts voice acting in many games to shame, and the gameplay is simply addicting as all hell. i hope they make a fps game that uses portals eventually...or hell...tes game that has the portals as a spell. its just an amazing concept.
witcher 2-the first one may not have been everyones cup of tea cuz of combat system (i still loved it) but witcher 2 is MY GoTY hands down, even with a rushed ending and sometimse inconsistant difficulty. the story is awesome, the world is rich, the consequences of choice is possibly the best ive ever seen in a game, and ive played em all where choice has "consequence". people rave over skyrims graphics, yet skyrims doesnt hold a candle to witcher 2. im sorry, but if they wouldnt have rushed the endign of this game, i would strongly think its the best game ever. I cannot overstate how much i loved playing it and replaying it.