I finally got something semi-useful accomplished on the Hachoir project: A RealMedia (.rm) file parser. Here is a screenshot of the hachoir-urwid frontend (one of several frontends available for the project):

I have long held an interest in thoroughly and usefully documenting the rm format which has always struck me as one of the most ad-hoc multimedia formats available, at least in terms of the support available in open source programs. I was eager to write this parser to help me study the format and write down all of the things that are present in various open source demuxers but are currently missing from any public documentation (that I am aware of). The parser I have written so far is the easy stuff; I want to move on to documenting that type-specific data field highlighted in the screenshot, which is the really interesting and useful part of the format.

But hey, if you would like to help, the code is now in the Hachoir Subversion repository.