In episode 7 of season 2, that aired on Showtime on Sunday November 11th 2012, Rupert Friend is in a hospital and suddenly drops his gown. We see his very nice and firm butt and for a couple of frames what appears to be a pretty big, white, uncut cock.

Paul Walker is a hottie. He is travelling with Steve Zahn, and they are trouble. One hour in the movie, they are forced to go completely naked into a gas station. We see in great details these two bare asses. Unfortunately they are covering their cocks with their hands, so we don't get any full frontal. But the scene is still very cute.