I think it depends on how serious you guys are. If you're planning on being together for a good amount of time (like marriage) it's cool. You just hear so many horror stories about those kinds of things getting into the wrong hands.
The general rule is that if such pictures are taken, they sooner or later end up on the internet, whether it is after a break-up or when the snooping nephew comes visiting. I don't know of to many women or men who really would appreciate this
I have known several people who have taken video,pics of their significant others in "compromised positions".None of them have stayed under wraps-where they should be- and caused all kinds of hard feelings and even a few lawsuits!It may sound like a fun thing at the time,but these things always,as steen said- fall into the wrong hands and gets out into the public.Maybe some role playing-just between the two of you -would be a better idea-no pics or video.Good luck to you.