ccValidator allows you to read a non-lawyer version of Creative Commons licenses:

ccValidator is an on-line service which parses Creative Commons licenses,
validates the RDF
and displays their
contents in human readable form.  It is usefull for ensuring that
your license accurately reflects the rights you wish to reserve (or
not).  The service is available from the Creative Commons at validator.creativecommons.org.

This will come in handy as more and more remixes abound throughout the Creative Commons.