I'm completely in favor of ragdoll and anything else trying to approximate real-world physics but when they completely cock up the clipping plane (or worse, when I go to rob the Tiber Septim Hotel's dining room for alchemy ingredients and find plates of venison floating a foot up from the table, to crash down only upon the pulling of a load-bearing corn cob), immersion turns to "what the fuck was that?"
Dead bodies clipping through the scenery is inexcusable, albeit occasionally hilarious when, say, a Mythic Dawn assassin finds himself embedded in a rock like a scene from The Cask of Amontillado gone horribly, horribly wrong.
Also, I think Oscar Wilde and Bender from The Breakfast Club look remarkably similar to one another. Just a thought.