Gamer (2009) film

This is a movie that flew pretty low under the radar.  The trailers mostly made it look like a real life doom game, make the convict "fight for his life ALA running man" premise.  There is another side to this movie, in that it showed a world where there were people who wanted to be controlled by others (sub) and others that wanted to control those bodies (domme).  There's a pretty long (though interrupted by other plot lines) scene where a fat dude that sits in front of multiple monitors, picks out a female avatar he likes, and takes control of her body.  He begins by choosing a random dude to have sex with (not unlike 2nd life), and is interrupted by the gamer who mistakes him for the real girl he's controlling and is forced to help him.

  

Take a look at these two clips: