With some of the TriDef monitors that they make you don't even need glasses, the 3d is done in the monitor with angled pixels that have 'depth'.
Right now they are super expensive, but coming down in price.
Currently a few videogames have auto generation of the 3d signal (like
left4dead) whether you use the glasses or the 3d monitor.
Tridef porn may actually become the next thing after HD who knows. If so though it means multiple cameras together for the shoot or software interplexing of the image (not as good/true).