Here is my linkdump from the May 2010 meeting of the Columbus Ruby Brigade:
The erubycon conference will be held Oct 1-3, 2010.
Ben Wagaman presented Core of the Core – Reflection.
Kevin Munc presented Method of the Month (methods actually) empty?, nil?, blank?, and present?
Matt Forsythe gave a nice walkthrough on using regular expressions.
Rubular.com was also mentioned.