I doubt it's as simple to get that job as you may think it is, as least for guys. I would guess that there would be a lot of competition because lots of guys think of it as the "perfect" job. I think you also cant cum for a week or 2 before you shoot the movie to make sure that you have a big load. All in all, it sounds like a nice job to dream about but I dont think it would end up being as fun as you may think.