I use a light that was made by Canon that I like quite a bit. It uses my cameras backup batteries to power itself and puts out quite a bit of juice.
ppc_michael is partially right. I would never use this thing for something that can be done in multiple takes like a short film. But the light is an absolute necessity for one-take shots like when I do a wedding for someone. It may produce uneven lighting, but it's a lot better than no lighting at all.
In order to help you better, what kind of videos are you making? Is this still for your newscast thing? If it is, I would look at something higher end in the ~100 dollar range as that will give you a better spot. A bright front subject and no light in the background is common for newscasts, so it won't look so strange.
P-Worm