Lots of JavaScript, mostly with JQuery. Some Flash. Compilers, interpreters, & language design (which have always been a hobby of mine).
I'll also second what everyone else said about learning Lisp, Smalltalk, early windowing systems, UNIX fundamentals, and other forgotten areas of the history of computing. There're lots of good ideas in there.
I'll also second what everyone else said about learning Lisp, Smalltalk, early windowing systems, UNIX fundamentals, and other forgotten areas of the history of computing. There're lots of good ideas in there.