A Question from the Founder of Wikipedia

From the Wikipedia listserve: [Wikipedia-l] Dream a little…

I would like to gather from the community some examples of works you would like to see made free, works that we are not doing a good job of generating free replacements for, works that could in theory be purchased and freed.

Dream big. Imagine there existed a budget of $100 million to purchase copyrights to be made available under a free license. What would you like to see purchased and released under a free license?