I just find it sort of odd and funny. Female nudity is ok, but male isnt.
I think one reason for this may have been when movies first started to get big-budget in the 60's and 70's into the 80's. Even up until the 80's, male actors were fully dressed a lot of the time, whereas the women started becoming more and more scantily clad. Think of John Wayne films - is he ever tantalizingly sans clothing? Not that this would be desirable in his later days with the whole grey-hair-eyepatch-pot belly thing going on, but in his day John was quite the hottie (
Stagecoach and such). Yet he never had to take any clothes off to make a good film. Even in his films, you didn't see sexpots strutting around wearing string bikinis.
And there's another thing. Good male actors can draw in men and women viewers, regardless of what they look like; at least they used to. I'm a John Wayne fan; I think he was awesome no matter what the subject matter of the movie was. But in his later films he was quite not the hottie. But he had fans, and his fans supported him. These days, there aren't 5 or 6 leading credit male actors like John Wayne; there's dozens that are expected to put butts in the theater seats. Matthew McConaghey, Tom Cruise, Brad Pitt, Christian Bale (beginning to, anyway), the list goes on. There's not a few other male actors to compete with, there's a lot.
The point of this rambling is that men didn't have to take their clothes off to make a good film, people still came to see the movies anyway. Back in John Wayne's day, he didn't have to be buff, ripped, or cut; he just had to act. Now they need rippling muscles, washboard abs, and chiseled cheekbones or they aren't considered big boxoffice. Men in John Wayne's day didn't have to work out, and so they didn't. They were in a lot worse shape than today's actors (Christian Bale in
Batman Begins was insanely ripped, holy cow!)
These days, it seems like sex is needed to make more money for a film. Look at the upcoming X3. Why do they need to bring in a little-known sexpot trampy X-(wo)Man who uses pheromones to capture men? The first 2
X-Man films didn't make enough money or what? Teenage boys are going to go see it for Mystique alone. Who cares about another naked woman?
The only actor that I can think of to headline a recent movie that
hasn't been in any movies showing off his body, is Ewan McGregor, although I'm sure there are others. And I like Ewan just fine (you rakishly grinning Scot, you!)
I think that men are just more visual creatures than women, and so men like to see ladies' naked bodies, but they don't want to have to work out themselves so women can admire theirs

That's the way it USED to be anyway, but there's been a shift so that men are required to be buff. I don't
mind looking at hot male bodies, but to me the looks of the actors come after the plot, storyline, and effects of the film.
Wow, that was rambling. I'm at work so I can't go back and edit
