👆 Tcl/Tk stories by @howtophil and others
At my first job 25 years ago I at one point needed to write a self-contained Windows EXE with a tiny UI to help a department run some XML transformations with a click. Piece of cake to whip this together in Tcl/Tk!
When I really had to learn Tcl was on the Sun workstations at Uni, where they were using a modular Tcl-based package definition system to manage software installed on our user accounts.
My plan for world domination, when I manage to find the time, will involve writing interpreters and frameworks for Flow Based Programming running over Unix pipes, implemented for and in a multitude of languages. Currently what I have is a half-written engine written with Tcl coroutines and threads.