I don't even like human language poems, I mean the idea of people fiddling around for hours to impose some mentally correlation which does not really exist.
What I really
in school was using big characters together with small characters for some kind of maths formula. No one sane would do this in a commercial programming project.
My opinion is most kind of fiddling is bad. At least for my purposes. There must be some hacking phreaking and reverse engineering- I am not going to have it.
I think RISC is quite cool you don't fabricate a sophisticated loop, you simply unroll it.
Obfuscating C code can be kind of a trap for students they think it's relevant.
OK I read it actually takes professional skills to write really obfuscated source.
"Writing Secure Code" also is interesting book to read (It's from Microsoft).