I've just added an idea for a Google Summer of Code project to the wiki; a Language Bindings Documentation Extractor/Generator tool.
The PyQt and PyKDE bindings already have auto generated docs, and so a good place to start might be to see what is involved in creating those. I asked Arno about the project and how much work it would be, and he thought the main thing that would need to be added, was to parse method definitions in the C++ source files, as the smokegen parser doesn't do that at the moment.
Unfortunately there isn't much time as the deadline for the submissions is on the 9th April, so you'll need to get started pretty quickly. Ask any questions on the #kde-bindings IRC channel or the [email protected] mailing list.