I have no idea why some people are complaining, Skyrim's Giant based space program is awesome! One of the most hilarious glitches ever.
Then again...
I have some issues with dead things resuming their idle animations. Let me tell you, shitting your britches is a perfectly acceptable response to seeing the icetroll you just killed standing upright upon turning around.
Also, chickens have a higher worth than children in Skyrim. I know this because toasting one chicken entails a lynch mob and a 40 gold fine (same as for assault), while torching a child does nothing at first. Can't say I blame them though, those children are fucking annoying.
There are a few floating rocks, and I've seen one glitch where the water in some bog was totally transparent, but it's far better than Oblivion. Plus the dungeons are all amazing!
This isn't really a glitch, but I hate how the default mouse setup but the action for the right hand on the left button, and vice versa. Talk about stupidly complicated...
And dragons really seem to hate Winterhold for some reason. Can't say I blame them though...