Fisher Light has introduced the LitePanel line of LED lights. The first is the Mini LitePanel that is designed to mount on a camera. 5600 K, dimmable with no color change

No price mentioned but I don't think it is low-priced. www.litepanels.com

$875 USD is not a bad price for a large LED array. Only 80 FC though? Still, if power and/or heat is a problem, it's a good way to go. I expect these to drop in price and become common someday.

Thats way too much $$$.

Also, (and I'll be doing some tests eventually and making a few lights) the shadow line is really sharp- this effect is new I think!
Anyway, a bright 5 watt lumiled with power supply, attached to an old processor heatsink/fan will get you going for less that 100 and will look cool too on a short gooseneck :).

If anyone is interested in a DIY alternative, check out this thread in the DVX forum:
http://www.dvxuser.com/cgi-bin/DVX/YaBB.cgi?board=lighting;action=display;num=1079729431

LED's tend to be color temperature specific with a narrow curve and peak. Sunlight, filament, and flourescent sources have much broader color temperature curves. I wonder how noticeable the difference is to a CCD?