TCL is quasi-religious. You either appreciate the simplicity and elegance of the 12 clearly ordered rules, or you think the nutbag scruffie programmer is talking to a burning bush.

I learned TCL for adding an embedded scripting language to a company's command line in 2005. I originally cast derision, but have learned to appreciate its beauty after a wrote a couple API frameworks in it. I think it has a little less magic now that lambdas and other shorthand notations are commonplace.