Ruby on Rails

I've been hearing about Ruby for a long time, but never had any time to look into it. Last week was slow at work since so many people were out, so I was able to fiddle a bit, and found a total-beginner's tutoral. It's actually intended for beginning programmers, not beginners in Ruby, so it's a bit simplistic, but a good place to start. It seems like it could be a really powerful platform, although I'll have to start reading the more advanced articles to see what it's really useful for.