Automate creating virtual envirronments

Automate crediting of virtual environments.
http://technosophos.com/content/building-custom-drupal-image-vagrant?utm...

http://vagrantup.com/

These custom image can be deployed using chef recipes:
http://www.opscode.com/chef/

Here you can try it out for free:
http://www.opscode.com/hosted-chef/

It should also be possible to use puppet:
http://puppetlabs.com/puppet/puppet-enterprise/

And a video about chef:
http://blip.tv/opscode/intro-to-chef-3776519