The audio comes from the on-board mic, which is a bit noisy. Earlier clips with an external mic plugged in (great feature) offer clean audio. Normally I'd embed a video clip but the 720p resolution is too large for the blog's width. The camera will shoot lower resolution but usually that's not what I'm going to be looking for.
I should mention that the unit ships with an HDMI cable so you can view clips on your flat screen TV, where they look surprisingly good. It also takes an SD card to expand the hours of material you can gather. I've got a 4GB card in mine for the moment, about $13 at Staples.
I promise to shoot something, or somebody, more attractive in the near term.