smart stuff
Free Book: Data Structures and Algorithms with Object-Oriented Design Patterns in Ruby
26 Apr 07 -
http://www.approximity.com/cgi-bin/blogtariAgile/index.rb/Ruby/freeBookDesignPatternsInRuby.rdoc
Great free book by Brune R. Preiss.
www.brpreiss.com/books/opus8/