HomePlug AV, a new networking protocol, was just approved and appears to be on the way in 2006. The new protocol is designed to use existing power lines in your home as a media connector for streaming audio and video at 200 Megabits per second. Say it with me people: ZIPPY!

http://www.hdbeat.com/2005/08/19/room-to-room-hdtv-with-homeplug-av/

See also: http://www.homeplug.org/en/products/index.asp and http://www.homeplug.org/en/products/products.asp

No products found at Linksys yet... need the version 2.0 hardware to support the 2.0 HomePlug spec.  200 mbps would be quite nice across powerlines...!