An overview of the community edition of Chef by OpsCode and creating loval environments with it(15-45 minutes). Following discussion on how we(and you) go about making deploying updates an easy and seamless operation, at least as seamless as organization processes allow.
If anyone has used Puppet I'd love for input from them in how it compares/contrasts to Chef.
Any other deployment tools would also be open for discussion. Capistrano, Fabric, PSake are a few I'm familiar with that come to mind. (ruby, python, and powershell automation tools)