Well you've covered most of the standards for Web. Nobody's going to ask you to write a web app in C. I'd say learn your databases, CSS and then maybe pick up

Well you've covered most of the standards for Web. Nobody's going to ask you to write a web app in C. I'd say learn your databases, CSS and then maybe pick up Ruby and C# (in that order). Employers are typically looking for accomplishments, i.e. projects you've created or worked on rather than just a list of languages. If the job calls for a language you don't know, buy that language's reference manual, learn it, and then say you know it. Once you've picked up one language, other ones are usually just a matter of syntax. The Systems Programming side of things is different, of course. I'm a mechanical engineer by training so as a consequence I know some embedded languages like Assembly for certain chips, Tcl, as well as C/C++ and a little bit of Fortran. If you stay on the web side it's unlikely you'll encounter these very often. My Javascript kung-fu is weak because I pretty much never do web stuff. It's all about having a relevant portfolio of demonstrable skills.