A List Apart - a great source for information regarding web development and design - wrote 2 articles a while back talking about Ruby on Rails.

The articles are a sort of introduction and description of the pros and cons of Ruby on Rails, it’s a good reading:
Getting Started with Ruby on Rails
Creating More Using Less Effort with Ruby on Rails

It’s also worth mentioning an interview that Akita did Hongli Lai and Ninh Bui, from Phusion -