I also thought It was going to look 3d like in the video

But later figured out that it's not going to look as good as when you see it through a camera.
Johnny posted this about how you could make it look better and it kind of explains why it looks better with the camera:
"
Shutter/polarized glasses - if you are going to put something on your head covering your eyes for 3D, it is worth considering making shutter/polarized glasses which allows the computer to deliver a different image to each eye. This results in stereoscopic displays. Combined with head tracking, you get a DARPA grade 3D simulator.
When just doing head tracking, the conflicting stereo depth cues weakens the illusion. I would love to do this, but it's quite a bit more hardware, and requires synchronization with the display refresh (or light polarization) which often isn't easy especially given the wide variety of display technologies out there."
So basically I think what he is saying is with just a camera it makes it look great because there is only one lens, and we have 2 eyes

So to make it look good for our eyes you would have to have 2 images slightly offset from each other, and then use a shutter system for the glasses or maybe a Red lens/Green lens like the cheapo 3d movies.
This is just my understanding of it
-Mike