I'm playing with The One True Awk™ to make some scripts.

The first one is a testbench generator for verilog modules.
This isn't very UNIXy, but it's something I was needing for my CPU Architecture classes and couldn't find one that suited my needs (I found one written in Python, but the generator wasn't very smart and only covered a small subset of what I wanted), so I wrote one myself.

And also a manpage to markdown converter.
I wrote this to post the manpages I wrote for my programs in the github wiki page.

AWK is indeed a extremelly useful application.
Books on AWK are on my reading queue.
Both scripts are public domain and written in POSIX AWK.