There are two Ruby meetups in Los Angeles: LA Ruby on the east side and an older meetup on the west side which merged into the more general LA Web Dev meetup. I helped start up the meetup on the east side. Next week I'm going to the west side to give a presentation:
Towelie: An IRB refactoring console
Smalltalk and Eclipse automated some refactorings, but that's impossible in Ruby - or so people say. In fact, people are already developing refactoring tools, including Reek and Flay. Towelie (a work in progress) is a refactoring console which detects repetition in your Rails and Ruby applications. Every refactoring should start by discovering where you've repeated yourself in your code base. Towelie does that for you.