Sam Ruby writes about continuations for old-time programmers like me. Anyone who starts of a technical article with:
This essay is for people who, in web years, are older than dirt.
and after the first example observes:
If you now look around, you will notice that all the tadpoles that never really programmed in C have jumped out of the pond.
is my kind of author. And I love that he drifts from language to language for his examples. Great article. Good ole'