Feb 1, 2010 Update:

I've now got the "HD versions" of Martin Harris' Tyros 4 Namm demos shot by Tapas uploaded to my YouTube Channel.
Viewing selection choices now include:

1080p HD
720p HD
480p
360p
240p

Optimal viewing of course is limited by your internet connection speed and monitor size.

Hope you enjoy the 'improved' sharper video quality: