I like (and generally use) the Creative Commons licenses.
I researched this. Creative Commons does not apply to source code. It’s only for other forms of media created by people (writing, art, music, etc).
http://wiki.creativecommons.org/FAQ#Can_I_use_a_Creative_Commons_license_for_software.3F
Creative Commons licenses are not intended to apply to software. They should not be used for software. We strongly encourage you to use one of the very good software licenses available today. The licenses made available by the Free Software Foundation or listed at the Open Source Initiative should be considered by you if you are licensing software or software documentation. Unlike our licenses – which do not make mention of source or object code – these existing licenses were designed specifically for use with software.
Creative Commons has “wrapped” some free software/open source licenses with its Commons Deed and metadata if you wish to use these licenses and still take advantage of the Creative Commons human-readable code and Creative Commons customized search engine technology. You can find more details here.