This is why I love Ruby on Rails
On Sunday morning I received a phone call from my boss who was on site at Farnborough Airshow installing an application for a client for use throughout the airshow. I was the 3rd number on the 'On-Call' list over the weekend and hadn't worked on the application during it's development - all I knew was that it was built in Ruby on Rails.
We'd built the application in a Virtual Machine which was working in the office so it should have been a case of just booting it up and connecting to it from a browser. Previously getting phone calls about failed applications was mostly a chore, not knowing what flavour of a tech the application was using, what CMS it was built using or more importantly what framework it was using - not so in this case.
I was able to connect to the machine, diagnose the problem and put a fix in place in under 10 minutes, conventions rule!!!