>>8
I don't think even 1 in 1000 has mastered Javascript... or Perl for that matter. Dunno about Python.
C and C++ are full of gotchas. C++ has a lot of important things to learn. Java? All the stuff that takes forever to learn is usually described in other languages as anti-patterns.
Lisp though. It's good stuff but I think it lacks expressiveness (yeah I know.) BitC was going with S-exprs until they needed type annotations or somesuch and the whole thing got messy. So they switched to block style.