Using gvim to automatically edit and re-path thousands of ArcView 3 project files across our network shares in the early 2000s was one my "Behold! I am mighty and a god!" highlight moments.

Before that the project was "work with these 25 people and help them open each project and fix the broken paths interactively" (because servers changed).

The script ran at night and everyone's things "just worked" the next morning. It was glorious.

Thanks Bram.