For some real fun w/ Forth go grab yourself an old PCI-based Power Macintosh and do this tutorial through the Forth shell in the machine's Open Firmware interface. :-)
Interesting. Can't really do that right now. But I remember reading that some Sun or other machines have Forth in ROM, etc. And of course Forth is in a lot of other places too, like space and telescopes, etc.
Starting Forth frequently appears in lists of the best programming-related books, alongside other luminaries such as The Structure and Interpretation of Computer Programs ("SICP").
