Knowing a handful of programming languages is seen by many as a harbor in a job market storm, solid skills that will be marketable as long as the languages are. Yet, there is beauty in numbers. While there may be developers who have had riches heaped on them by knowing the right programming language at the right time in the right place, most longtime coders will tell you that <A HREF="http://www.eweek.com/article2/0,1895,2016415,00.asp?kc=EWWKNEMNL091506EOAD">periodically learning a new language</A> is an essential part of being a good and successful Web developer.