http://www.rubyinside.com/passenger-stack-quickly-install-a-full-ruby-and-passenger-stack-1533.html
Passenger-Stack is a set of scripts for the provisioning tool Sprinkle that make installing a full Ruby, Apache and Passenger-based stack almost a one-line task. It'll take almost any UNIX-y (correction: Ubuntu / Debian) server of your choice from a generic install through to deploying Rack-based apps (including those built with Rails, Merb, Sinatra, and Ramaze).
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Sprockets: A Ruby-powered JavaScript dependency library from 37signals
Building a Ruby Gem (From Scratch) Using Behavior Driven Development
