I've recently discovered the joy of 'Ruby on Rails'.
Yes, I know - I'm way behind the times with this. Not really, just been actively avoiding it because the development environment (Windows) I've used for so long is pitifully slow when it comes to Ruby and Ruby on Rails in particular. This all changed over Christmas 2007 - my wife bought me an iMac... The speed difference is just unbelievable.
So now I'm busily attempting to rectify this situation and having a great deal of fun doing so...