The Optoma HD66 does have a great big advantage in that it is able to accept video streams coded for 3D (at 120Hz - twice the usual rate) and project them at 120Hz onto the screen. Getting shutter glasses to sync with that is another matter, but luckily, a much simpler one. The Optoma relies on DLP Link for the glasses to work, and the glasses now cost about $150 each.
More on DLP Link here:http://www.dlp.com/projector/dlp-inn.../dlp-link.aspx
Also, most likely any major manufacturer of shutter glasses will sell an adapter or box with an emitter letting their glasses work with blu-ray players and cable boxes and any 3D capable TV. But, the uncertainty and virtual lack of 3D content now inspires the advise to wait a little longer if you can.
Several places around, people are saying they are playing the game Avatar in 3D right now - on consoles, not just on PCs. You might look that up and see how the glasses are attached to the system.