The SEO Rapper focuses on website design. For communicators, his 3 minute raps are a hilarious refresher of the current best practices of web design and web 2.0 basics.
Links:
[1] http://progressivecommunicators.net/en/drupalit/count-vote/160/1
[2] http://www.youtube.com/watch?v=a0qMe7Z3EYg