Summary
In this interview filmed at RubyFringe 2008, Tom Preston-Werner talks about how both Powerset and GitHub use Ruby and Erlang, as well as tools like Fuzed, god, and more.
Bio
Tom Preston-Werner works for Powerset Inc., and is one of the founders of GitHub. He's created various Ruby tools such as the monitoring tool god, and many more.
Many have learned the basics of using Git from the PeepCode Git screencast. In this PDF, Scott Chacon goes even further to explain the distributed filesystem behind the popular source code management system.