When I reviewed one of my own videos I observed something a bit out of the ordinary. It was when Dovakiin fought a bunch of Draugrs that I witnessed it - he hit one of the Draugrs with the hilt of his sword. http://www.youtube.com/watch?v=dD61StYW5oc, if you don't want to see the whole movie, fast forward to 4:11 and you'll see it.
I noticed that the attack didn't do a lot of damage, but I speculate that hitting with the hilt may stagger opponents, or at least give some sort of advantage in battle. It could also earn you achievements (trophies)... who knows?
What do you think?