I admit that this guy may first appear to be of the "woo-woo" category, and yet I constantly find myself, since I first watched this video last January, coming back to his ideas. I'm embedding the short version (10 minutes) to wet your tongues, and then the full one, if you have the time. Basically, he starts with trying to solve the "hard problem" of consciousness, or how it comes to happen that 'unconscious' matter like the atoms we are made up of eventually comes to have consciousness. Through this explanation, he explains how light, and it's manipulation of time and space, could be the key to understanding our own consciousness.
Let me know what you think!