How bacteria find their middle.  Here are a few references (pdf):

1. "Cellular organization by self-organization: Mechanisms and models for Min protein dynamics", by M. Howard and K. Kruse

            - this is a recent archive posting and appears to be a  "minireview" on spatial and temporal localization of proteins inside cells:
         q-bio.SC/0502032,

2. "Min oscillations in E. coli induced by interactions of membrane-bound proteins", by G. Meacci and K. Kruse

       - this is a recent archive posting that extends existing models of Min oscillations: q-bio.SC/0504017,

3. "Dynamic structures in E. coli: Spontaneous formation of MinE rings and MinD polar zones", by K. C. Huang and N. S. Wingreen

             - PNAS, vol. 100, pp. 12724-12728 (2003); one of the more readable models and accounts of Min protein oscillations that cleans up some of the earlier works