This presentation shows how to use Vagrant & Puppet to easily provision virtual machines that can be used as development environments for your Rails projects. You'll keep your development machine fast, your environments isolated, and any developer will be able to get up and running on a new project in less than 5 minutes.

[With correct URL, sorry]

I just released Pkgr, a gem that helps packaging a Rails app into a debian package (tested on Debian Squeeze for now). It's still early days, but I'm interested in feedback.