C3PX said:

There is also a fair deal of female nudity in them, the first two both featuring a sex mini game that earns you extra points (it is really lame, the camera pans away, and you pretty much play dance, dance revolution with the sounds of your character grunting and the women groaning. I felt it the whole thing was in pretty bad taste and did absolutely nothing to help the game out. Just added to please the large protion of the games audience who have never actually had the opportunity to do that in real life).

I guess I should pick up a copy of Dance, Dance Revolution.