Standard, more expensive headsets only display a diagonal view of 30 or 40 degrees, meaning when you look at it the image is way off in the distance.
Video input to the Oculus Rift is DVI, but the handy dandy control box is capable of converting your PC's HDMI output to DVI. VGA is not supported at this time. The developer version of Oculus Rift is not compatible with game consoles, but only with computers (Windows, Mac and Linux) and certain games.