Yesterday I’ve finished reading Lawrence Lessig – Free Culture. It is an extraordinary book and I recommend it to everyone. Particularly if you are interested in free content, public domain, creativity, peer-to-peer networks, piracy, multimedia corporations, copyright, patents, laws and everything related.
Lawrence Lessig is a law professor, yet he has the gift to write very comprehensibly and engagingly even for simple mortal IANAL audience. His character is as extraordinary as the book itself. He doesn’t just teach law at Hardward Law School, he also engages or was engaged at boards of Creative Commons and Electronic Frontier Foundation. He stood before the Supreme Court of the USA and defended public domain against the ever extending reach of copyright.
You will find yourself thinking about the current “copyright vs P2P” war in a whole different perspective. The book is free to download, what are you still waiting for?
Kparal's Fedora Blog 
For my Czech friends, here’s the link for Czech translation: http://www.svobodna-kultura.cz/
Of course, the book is awesome and worthy to read by anybody.
Just two caveats to it:
* http://diveintomark.org/archives/2006/09/15/cc-by-nc
* and of course the book is written by the American law professor so it (or its Czech translation) has nothing to do with the Czech legal situation.