if you were to use these in a mirror mode and get a mouse pointer it would be amazing. With somehting like this who cares about the screen on the phone
ITG-WideViewXL - 72" Portable Wide Screen Video Goggles, Built-in Memory, MicroSD Slot, Wireless Oporation! AV-Input, 5Hours of playtime. - iTVGOGGLES

obviously not perfect for droid 4 yet but i am sure they will have a widi model eventually or at least a hdmi one
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but tell me what you guys think...... could this possibly be the wave of the future. maybe your phone becomes a mouse touch pad. obviously this would be more for media watching or maybe a few games where u dont ahve to look at the controller but def a interesting idea