A lot of people are using ruby on rails as a web development framework, its a pure ruby templating/object-relational-mapping/application framework and awfully cool - take a look at the webcast over at: http://media.rubyonrails.org/video/r...with_sound.mov
. Of course there's no reason why you can't use "just" ruby to do things too - much as you might use perl, php or python.
I'm using Rails to develop my organisations' intranet. Other sites that are using Rails include http://43things.com
, and http://www.odeo.com/
(more at http://www.rubyonrails.org/applications
Ruby is a nice language because of its clean, consistent, object orientated syntax; weak typing; dynamic classes and plain straightforwardness...
Charlie Harvey's website - linux, perl, java, anarchism and punk rock: http://charlieharvey.org.uk