This may sound like a but of a fluff question, but I think it can be of some use. Often I've seen people, both on SO and off, say that they want to contribute or work on a project of some sort, but they don't know what or how. Most of the time, the response is to "find an open source project" or "just do something they find interesting". I think it would be awesome if we could come up some better answers. So the question is, what do you, the SO community, a group of developers, hackers and programmers, think would be interesting or cool? Some open-source project that has fallen by the wayside? Something new?
Ideally, this question might push somebody to implement or take on one of these projects. If nothing else, this might serve as an interesting gauge of which projects developers are really interested in.