You're really going to watch 3d commercials?
While commercials do work, they rely on a tiny fraction of the viewing audience noticing what was advertised. Nobody is fascinated by commercials' content; nobody is going to keep their 3d glasses on when the commercials come on; and no advertiser is going to shoot 3d commercials. Except as a gimmick.
Doing other stuff during commercials is only sensible.