We heard from the Navy yesterday with their version of Gangnam Style by PSY, but the Army and the Marines battled over versions of "Call Me Maybe" with tons of videos all over YouTube...My favorites:
US ARMY (Kunar, Afghanistan):
Come on Free, you know you were smiling while you watched it!
USMC coming tomorrow.
(UPDATE: When I picked this as my favorite, I didn't even notice that these are 4th ID boys...my Dad's old Division...)