I first tried seriously using the "Ruby implemented in Ruby" Rubinius last spring and really liked it. If you have not done so already install it (rvm install rbx) and give it a try. Rubinius does not support 1.9.x syntax yet, but that is coming. Great work by the developers of Ruby 1.9.* but I still like the idea of Rubinius, long term. Good show for Engineyard supporting the Rubinius development.