There is a nice article over at http://lwn.net/Articles/30875/ called "Knoppix - the Great Linux Advocate".
It points out that on the KnoppixCustomizations page there are 28 Customizations!

Knoppix squeezes desktop onto 1 CD
- eWeek print edition under "Pings & Packets.

Article "Knoppix installation tips" over at newsforge.

I think this may have been posted here before, another article about Knoppix and Morphix is at InformationWeek