Live translation into sign language is nothing rare. But when you realize how complex and highly technical most of the sessions are, it is hard to believe that it's actually possible.
I shot this video during Joshua Bloch's Effective Java session. Joshua is a great speaker, but he also tends to talk about pretty geeky stuff that a non-technical person would find hard or impossible to follow.
I applaud all these interpreters for the great work they do!
The video quality is not the best, but you get the idea :) I might shoot a better one tomorrow if I feel like it.