OSDev.org

I see that UND have a good lot of their OS course stuff online. While I realise you all may well have knowledge beyond this, I'm sure someone might find it useful or, at least, interesting. I haven't looked through it so I can't vouch for the quality, but certainly the quantity looks like it might be good.

http://www.cse.nd.edu/~surendar/teach/s ... ture.shtml