| I think the shake is very minor and is simply flexing in the seat. See if turning on IS abolishes it, it should because it is so minor.
But what is that sound...it sounds like there's some pebbles inside it!
If I were to spend any money on a camera I would want one that has a progressive output, since everything I make is destined for web, where I have to through the extra step of de-interlacing and that also reduces resolution. | 
