What I'd like to see, is the copyright cartels or congress, whoever, having the balls to officially legislate the public domain away for good. If the public domain was actually removed from existance, I'd like to see people justify copyright as a whole.
IMHO, that is one of the reasons why corporations are so busy spreading the 'intellectual property' meme around. When the general public has it firmly in their heads that ideas/expressions are always someone's property (like cars or lawn chairs), no justification will be needed whatsoever.
If you are running Fedora/SUSE two good sites, to browse are BioLinux and BIOrpms:
http://biolinux.org/
http://apt.bea.ki.se/packages.html
The sites have RPMs for most of the basic packages along with descriptions (some packages are a bit old, however).