An S.L.R. Tailored for Video, camera review by David Pogue, about the new Panasonic GH1. It's a very tempting camera.
"S.L.R. (single-lens reflex) cameras are the type professionals use. They’re usually big, bulky and heavy (the cameras, not the professionals)."
Oh, I don't know, have you seen professional photographers?
The GH1 is breaking new ground in video capabilities for a still camera, like live autofocus.
David has a couple footnotes too.