What you see is what you see. How you move is how you move.
Ever get that glare off the screen in the middle of an epic firefight that caused you to have to refocus long enough for your enemy to gain an advantage.
With this you won't have to a personal TV in a light weight head piece.
Now if sony could only add a way to make this compatible with the PS Move (or other move type systems.) Say in the form of your head controlling where you look, crouching and jumping.
Imagine being able to block out all other "distractions" from your living room, your eyes being the PC's eyes, your movements being the PC's movements.
Full immersion into the "body" of a character, from the comfort of your own living room...
Hey one could dream right.