As part of the Mozilla Teach the Web Project I created a Popcorn project about hacking public domain ebooks. From that I decided to try using Haiku Deck to create a more visually compelling presentation with more information about how to actually do the hacking. This is the result.
The Popcorn project, Hacking Public Domain eBooks for Use in the Classroom, has recently been revised. The original version is described in this blog post.