A gathering of kernel developers

In related efforts, Cory Doctorow some time ago mentioned assigning students to improve and expand a stub Wikipedia article about some subject they were studying (for something English-related IIRC), with assessment being done based on their contributions to the page. Always struck me as a great idea; it encourages researching further, thinking about the best ways to (re)organise descriptions of complex ideas, and the importance of good collaboration. Not to mention that I'm sure the Wikipedia article in question was much better once they were finished.