So recently, Fassbender's lack of inhibition in the movie Shame has caused quite a stir (and a few jokes) within the movie community. I haven't seen the movie, but it got me thinking on the stigma of male nudity in movies today.
Aside: Just to clear the air, I have no problem with nudity if it to enhance the sensuality or sexuality of a scene. There is a reason some directors do insert nudity aside from just showing tits and ass and I believe that nudity can help depending on the story.
With that said, I don't have a problem with male nudity personally. SPOILER ALERT! Hell, one of my favorite movies ever (Boogie Nights) ends in a shot of Dirk Diggler's 13 inch penis. It's not a real penis, but it's still a penis. I know guys don't want to see another man's junk, but that's why eyes move. I move to another thing to concentrate or I can look at it and feel bad about my situation. Either way, I'm comfortable with male nudity. Forgetting Sarah Marshall has a great example of using male nudity to make a scene funny. Like female nudity, it has to have a purpose whether it is towards the story or for arousal because I know women like to see naked guys in their movies just as much as I like to see boobs in my horror movies.
It's no big deal at the end of the day if the movie is good.