Design Patterns In Ruby
DesignPatternsInRuby Russ Olsen AddisonWesley Professional Ruby Series
[ISBN:0-321-49045-2]
It has its own web site at http://designpatternsinruby.com/
When I saw this book in the bookshop I bought it and will share more about it as I get into it. I knew it just had to be documented here. -- JohnFletcher