It could be for you maybe the frost troll while going to the greybeards, the number of quests, one of the locations etc....

What came as the biggest shock to you when you first played the game?

worst spoiler thread ever?

Probably the coalition Nord/Giant Space Program. One Nord warrior plus one healthy Giant swinging a club.

Skyrim did set a record though for winning the space race of Tamriel...

This entire thread ought to have spoiler tags on it "

I will just move it to spoilers where it should have been posted...