Do any DIY'ers have a plan for building LED styled lighting for the video production community?

LED lighting is fast becoming a viable, efficient, green alternative to tungston, hmi and fluorescent production lighting for the film and video industries. The LED lighting sources are cool (they don't heat up rooms and make the talent sweat), they use 95% less energy, they are dimmable and can change color temperature with the twist of a knob, can run AC or DC and have a lamp life of over 50,000 hours. There are many advantages to LED lighting systems but they are prohibitively expensive for many video producers. A 1x1 foot light panel costs about $1700 dollars and when working with the fixtures they feel like they were purchased at Walmart. I am wondering if anyone has a plan for DIY LED lights.

Examples:

http://www.bhphotovi...5600K_1x1_.html

http://www.litepanels.com/

http://www.filmandvi.../roliledli.html