Ruby is very popular these days. OnLamp has a great article on how to get started with Ruby and Ruby on Rails. Also, I've enjoyed Mike Clark's blog, specifically Ruby Learning Test #1: Are You There, World?. There are many other resources out there. Not convinced that a dynamically typed language is viable? Martin Fowler has a nice blog entry comparing dynamic and static typing. The list goes on, my blog wont.
Whether you believe the hype or not, many people I admire are very interested in Ruby. That's reason enough for me to want to explore it. Ignore Ruby at your own risk.