Kind of old question but will answer anyway. Owned the GH1 for about 2 months then got rid of it, not because of video quality but because I wanted a better camera, the GH1 was all computerized and had no mirror in it. As far as video, thought it did a great job if you didn't move too fast, that would just cause a "jello" effect. As far as using for shooting, im sure alot of people do it, but i already have a dedicated video camera and the GH1 didn't fit. Also, it is a micro 4/3 (or is it 3/4) camera which means lens choice is very limited and very expensive, unless of course you have an adapter in which you can use other lenses (ie, Nikon, Canon, etc.) However, because it is a film lens that you would be using, you can def play with depth of field which is a big plus!
Jona