Interested in agile methods? Software developers and managers - want to know what their impact will be on your development process? Academics and researchers - want to know what we do and don't know about agile methods? Two recent systematic literature reviews will help:

• Tore Dybå, Torgeir Dingsøyr. Empirical studies of agile software development: A systematic review. Information and Software Technology, Volume 50, Issues 9-10, August 2008, Pages 833-859
  http://dx.doi.org/10.1016/j.infsof.2008.01.006
• Jo E. Hannay, Tore Dybå, Erik Arisholm, Dag I.K. Sjøberg The Effectiveness of Pair Programming: A Meta-Analysis. Information and Software Technology, In Press, Accepted Manuscript, Available online 20 February 2009.
  http://dx.doi.org/10.1016/j.infsof.2009.02.001