I'm a big fan of making things up and ignoring the fact that they would exist if they were worthwhile. That's why I started in on this, my most recent project.

I'm making a hand-held Jib of sorts, designed to hold a 3-5 lb camera, usually a Sony PD-170. I've been working out half-baked theories of how to distribute weight for maximum control with minimal strain on the operator's arms. Something had to win out over ideal theory, and in the end it was portability. This setup will work out in the great out of doors of even out the window of Sedan (you might have to lose a seat for that...)

At any rate, the thing is made of mostly aluminum and the welding / assembly should be complete by Christmas. I was hoping to post some of the test videos online (assuming they're worthwhile) and get your comments on 'em - this post is mainly to generate interest / let you tell me i've just wasted my time it will never work because bleh... Look for updates and have a happy holiday!

Tom,
I know that what you are trying to do is totally possible. I've seen some incredible rigs that fit the bill of what you've described. For some potential inspiration, check out:
http://www.bodyboom.net

There's also a great rig that I saw at CineGear that had a camera on a 3 axis head that was controlled by the operator's body movement (lean left/right, etc), but I can't remember the name of it or the company (other than it was French).

I look foreward to pics/ footage! Good luck!

Here is a relative thread:

www.dvinfo.net/conf/showthread.php?s=&threadid=11505&highlight=Body+Boom