Today I used a Creative Commons license for the first time for my own work. I received a request for the presentation slides from my Educause 2003 presentation and the message requesting them suggested that I include a copyright statement on the materials. Instead I decided to use a CC license called Attribution-ShareAlike, which allows anyone to make use of my work, as long as they attribute it to me and share any derivative work under the same terms.
The process of choosing which license to use was really easy, using the process set up on the CC web site, and they provided a complete code snippet to use on my web page to notify people of the license and link to the terms.
This is great stuff, and the folks at Creative Commons are doing really terrific work that points the way into usable forms of protecting intellectual property while allowing for sane reuse of the IP.