Future Skills for a Budding Web Designer?

ericdfields asks: "One of my lifetime career goals is to establish myself on some decent level or another as a well-rounded, (mostly) standards-based web designer with some backroom web development knowhow. The problem is I have no clue where to begin. HTML, CSS, JavaScript are an obvious start, but what about other web-driven languages? PHP, XML, SQL, Perl... the list goes on. Should I be looking to grab hold of some Flash and Director skills? What abilities will be needed on the horizon that I can get an early start on learning today?"