This is doing the rounds at the moment. Modelling the spread of zombie-ism amongst the human population. (E.g. report on BBC website.)
The original article is actually a bit physicsy – the methods used are pretty common ones for modelling physical processes with a computer, and the sort of thing I do a lot of in my research. The authors just happen to have picked a rather different application to normal. This is the kind of modelling I was referring to when I made a comment a few months ago about swine flu (though I think the swine flu – sorry, Influenza A (H1N1) – modelling is likely to be more advanced than this.)
Anyway, enjoy the report, and commetary for example on Orac, and, if you every come across a zombie, please don’t rush over and tell me about it.