A little dated (3 years ago), but still interesting:

Eric Giler wants to untangle our wired lives with cable-free electric power.
http://www.ted.com/talks/lang/eng/eric_giler_demos_wireless_electricity.html 


This one is from this year:

What if every light bulb in the world could also transmit data?
Harald Haas: Wireless data from every light bulb.
Harald Haas demonstrates, for the first time, a device that could do exactly that.
http://www.ted.com/talks/lang/eng/harald_haas_wireless_data_from_every_light_bulb.html


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