I've also been getting the 'dragons dropping dead from the sky' glitch as of late. It seems to happen only in the Reach so far.. had a big nasty blood dragon materialize outta nowhere and die in a river, and another one right inside the gate of Markarth. Dunno if the corpse is still there.. hope not! And I hope there won't be many more of them as it really ruins the immersion.
Other flaws include the aforementioned Louis Letrush and his clones near the Whiterun stables, one of them half-buried in the ground.. should probably just kill them to remove the eyesore. Skjor of the Companions came back to life, too, and he's giving me quests like nothing ever happened.
Let's see, what else.. well, the mammoths still fly occasionally, though very rarely. The quest where you're supposed to return the executed man's amulet to the woman in Solitude is bugged beyond repair. I'm also stuck with a bunch of briar hearts in my inventory which the game STILL considers plot items even after I completed the quest, so I'll probably have to remove them via console. And ever since patch 1.4 a couple of miscellaneous quests from Whiterun are bugged: the developers changed the names of two locations: Secunda's Kiss became Secunda's Shelf, and Valtheim Towers became Valtheim Keep. The misc quests associated with them no longer work because of the name change (i.e. kill the giant and kill the bandit leader, respectively).
These are all minor annoyances, but they do add up and detract somewhat from the joy of gaming. Then there's the fact that the game was really damn near unplayable out-of-the-box, requiring extensive ini file tinkering and messing around with drivers & CCC settings, not to mention several reinstalls. I finally managed to get it running smoothly and looking pretty, but it took a lot of effort, effort which I as a paying customer feel Bethesda should've done for me. I think Skyrim is the first game that has made me work so hard just to be able to play it!