I set mine up using one of those fluorescent mechanic's under-bonnet lamps. It's about 12" long, and the ballast is on the wall plug end so there's no weight on the tube.
The tube is enclosed in a clear, tough plastic, and part of the tube is masked out with white card so only half the lamp shows. I rotated the lit slit half up the wall where it shows a nice even glow all round the set. I have white walls.
The unit sits neatly and firmly under the s-video cord going up behind my AV cabinet to my 50" Panasonic, and I also have it connected so when the main switch with everything connected gets turned on with a remote, so does the backlight.
As far as I can tell, it is the correct illumination (I spit on my finger and held it up to the light), and the results are very wow. Blacks - which are eye-stopping with this Panny anyway - seem to have more life, and the colors are not brighter, but crisper in some way.
I experimented with a halogen desk lamp, and though the color temp was warmer, it didn't have the same effect on the picture as the whiter fluorescent. Or maybe it was my imagination... after a while of tweaking it gets hard to see a major difference.
The only part I can't get used to is the feeling I'm not sitting in the dark like a proper theater. It's like a cross between a theater screen and a backlit fish tank.
Yet when I turn the bias light off, the image loses that pop. I'm addicted!