Does anyone know of any project working to convert public-domain e-books (like those available from Project Gutenberg) into a wikipedia-like hypertext format? That is to say, into a format where proper nouns, references, and terms the reader might not immediately know are linked to some resource (wikipedia entry, original source, etc) that might help the reader gain a better understanding? I love how this has been done with the Orwell Prize online adaptation of Orwell's diaries. Just think of how useful it would be with a dense philosophical or historical text. We all end up searching wikipedia for the references anyway.
If no one knows of a project like this already ongoing, would anyone want to help start one?