I was serisously hoping giants would be cooler in Skyrim. LIke you could talk to, trade with, befriend, and do quests for giants. And they all wouldnt look exactly alike. They have absolutely no muscle definition and their skin makes me wanna vomit. Is there such thing as a giant warrior? I understand that all these little giants are shepherds. They have got to have some warriors, considering Skyrim is very dangerous even for them. (I bet arrows still hurt quite a bit)
Bethesda likes to.. simplify things. The Falmer are grossly mutated elves, so they should be ugly.. but they shouldn't all look the same. Giants are no different, but that would have been time consuming to implement.
I do wonder whether or not they're supposed to be intelligent though. It doesn't seem as though the giants in Skyrim are even capable of speech (would have been nice to see http://www.uesp.net/wiki/Daggerfall:Giantish#Giantish in Skyrim).