PROGRAMMING : The joy of Scheme (LISP)

The following is a pure object oriented system implementation written in Scheme. Doesn't have quite the same extent of libraries as Java :)
http://okmij.org/ftp/Scheme/pure-oo-system.scm
(BTW, obviously this is an entry for us programmer types, there will - hopefully - be stuff of interest to other people as the days go by...)