The really interesting thing about Forth is just how minimalistic a bare-metal Forth implementation can be - not even an interpreter, but literally a few words handcoded in machine code, and the rest built from there (and then possibly optimized with more machine code, if you need that).

Given the ease with which Forth can be ported to other platforms and architectures, I often wonder why there's no C-to-Forth translator - it seems like it would be just about the easiest way to bootstrap things.