See http://www.reengineering.ed.ac.uk/
Thanks to google I just found out that the reengineering patterns group in Edinburgh has run its own Wiki as well: see http://www.dcs.ed.ac.uk/home/rgd/wiki/html/PublicReengineering/FrontPage.htm
From their recent changes, it seems that this wiki was active in the period 1998 -- 1999, but not now anymore ...
-- ArieVanDeursen - 04 Jan 2002
Reengineering patterns for ObjectOrientedProgrammingLanguages are covered by the FamoosProject