Useless obscure languages I've programed in...
ATLAS - Automated Test Language and Stimulation, Looks like basic or Fortran but has only basic looping and variables. If you wanted to do any data processing you dropped into FORTRAN.
VULCAN - The Operating system/shell ATLAS ran on, which ran on an Harris H-100 computer. 128K of memory, 24 bit address buss with a whole board dedicated to the processor made of 7400 logic chips, and the size of your fridge with lots of flashing lights and thumb switches to 'program" stuff like where you'd like it to find the boot loader. 300Meg disk drive was the size of a washing machine, 10 Meg "removable" disk packs where 20" around.
DCL - Deck Command Language - VAX 11 scripting language, nice but clunky for doing any real processing.
JCL - Job control Language, it's not just on punch cards anymore..
CLIPS - Used to build expert systems.. Used by NASA in the Space Shuttle, makes you wonder why software didn't become a problem for the program.
K-Shell - Korn Shell, Heck of a way to run a Unix box..
AWK - Unix data extraction tool, It's just Awkward.
SED - Stream editor, companion to AWK, but really hard to follow.
YACC - Yet another Compiler Compiler, yep, you can make your own compiler with this thing...
RPN - Reverse Polish Notation, Programming using math primitives on a stack, you haven't lived.
Assembly - Yep, I've twiddled the bits directly on the processor, both by dropping into assembly from C and just coding directly in Assembly.