Open Source projects that need mirrors?

I have an idle web server with unlimited traffic running until January 9th, 2011.

An answerer to this question had the idea of offering to host mirrors for Open Source projects.

Does anybody know of Open Source projects that have such massive mirroring needs that it's worth the effort to set another one up for this relatively short time span?

Does anybody know some sort of site or list for this purpose?

I hope this is not off-topic. I thought Server Fault would be the best place to ask, I apologize in advance if it isn't.