Thanks for the positive comments. I don't have a problem with constructive criticism although I posted this video as a demonstration of the cameras abilities rather than a demonstration of my editing abilities (or lack thereof).
I'm only learning this video lark and my production techniques are still rather primitive at this stage. In this particular case I only had access to basic editing tools (trimmer & joiner) for the avi files the camera produces so adding transitions or sound track were out of the question.
In general I prefer the only "music" to be heard on my videos to be the "music" made by the motorcycle that is why audio quality is important from my point of view. I have found that an external microphone gives the best results because you can mount it towards the rear of the bike where it can pick up the exhaust note better and also mount it out of the wind to avoid wind noise. The built-in microphone on the ATC3K does a pretty good job but it does require some protection from wind and is prone to distortion at higher volumes.
There are some very interesting cameras available for on-bike use on this site here:-
http://www.dogcamsport.co.uk/dcs-bike-camera-kits.htm
The HQR-2 kits look particularly impressive at 720 x 576 res but I'm not even game to do the currency conversion to find out the cost in Aussie dollars.