True, the HC8000D is 3D capable, but you will need a couple things before you watch your first 3D movie. Besides the 3D movie itself, you'll need a 3D emitter which plugs into the input panel. And you will also need 3D glasses. Those will be the usual active shutter glasses.
The 3D emitter is $99. Mitsubishi recommends either their new proprietary Mitsubishi glasses ($199), or universal glasses from 3rd party manufacturers such as XpanD. Their new proprietary glasses are expensive (most competitors are close to $100), although JVC's glasses were $179 at last look. (They too, charge $99 for their emitter.) These proprietary Mitsubishi glasses are moderately light, at 55.2 grams (almost two ounces). By comparison the Epson glasses are 34.2, the new JVC's are 37.8, and the Panasonic's came in just under 1 ounce. For reference, my lightweight regular glasses that I wear (which are very light) come in under 23 grams, and my Ray Bans weigh more than all of those mentioned except for these Mitsubishi glasses.
Here's the thing. If I have this straight, when viewing, you can use either the Mitsubishi's or the universal glasses, but not both at the same time. If you have friends who own universals they can bring them over, for larger groups. The proprietary Mitsubishi glasses, though are brighter, and use the High Speed setting in the 3D menu.