A long (loooonnnnnggggg) while back, I wrote
a fic that implied that Dean does a pretty hilarious Elvis imitation.
Jensen has now made it my head canon.
Go here, scroll about half way down to the video. Be sure to enjoy the scenery along the way.
ETA: If you can't get the vid to load from the LJ page, try it from
here. But try the LJ page first. 'Cause there's a lot of pretteh to be appreciated. (Standard disclaimer: I know nothing about the foreign-to-me hosting site, nor can I read the language. Just so ya know. So any sort of, I dunno, questionable pop-up ads or whatever . . . surf at your own risk.)