Take Five - Brandon Hall (current issue of Chief Learning Officer) has a great article about creating engaging videos for e-Learning.
Check it out: http://www.clomedia.com/take-five/brandon-hall/2009/September/2726/index.php
I featured the PricewaterhouseCoopers training videos in a previous blog - in case you missed it: http://www.pwc.com/us/en/careers/pwctv/ch2-the-firm-seasons-1-and-2.jhtml