Language design 101

This year I discovered that the subject of computer language design is far more fascinating and accessible than I thought. I've been in a position of using languages, but had never really stepped back and thought, if I were to have designed this, how would I have structured the syntax and what sorts of features would I have built into the language.

I have yet to spend much time on it, but I would like to try creating some domain-specific languages for some things and then perhaps work my way to designing a C-like language.