Yesterday, I spoke at Jax India 2008. My session was on "The Da Vinci Machine - Multi Language Environment for Java Virtual Machine". There were around 70 to 90 participants.
My session went fine with number of good questions from participants. Started my talk with "why we need other languages support on JVM" then pitched into "Introduction to porting new languages on JVM" and ended my talk with discussion on various "MLVM features (Light-weight byte code loading, light weight method objects, Dynamic Invocation, Symbolic freedom, Continuations and Tail recursion)". Click here for presentation slides.