Oh man, I am using (abusing?) AHK so hard. I work with legacy software programs for structural analysis, where everything in the model has to be input with clunky form fields. Thousands of properties need to be defined for various structural components (beams, columns, etc). It used to be >2 weeks of entering numbers into fields and clicking buttons.

Now, AHK is set up to just reads my design spreadsheets and define everything in a few minutes. I hate the language syntax, but man is it useful! God bless AHK!