I'm a web and Linux developer with strong experience in C, PHP and JavaScript. I'd really want to take my skills further and expand into other languages, but I'm not sure what to choose.
I've considered Python, as it's very popular and is used to write a surprisingly high number of programs in Ubuntu and seems very useful to write programs quickly without worrying about lower-level handling yourself like memory in C.
I would like to expand the language base I have to be able to improve my career opportunities. At the moment, my work is currently with web development clients (PHP and HTML) but I want to write native applications too.
Python and Ruby are wery nice languages, and you also my consider to learn lisp (scheme, clojure or Common Lisp) which is most powerfull programming language. You can compile scheme and clojure to native code.