Um, yeah, I'm not a rusted on fan of Einsturzende, but I've got 1/2 Mensch, and I suspect it's as good a place to start as any. Difficult listening depending on what you normally like, my friend who's a bigger fan likes to claim they invented industrial music.
I prefer my avant-garde German sounds more trad: Neu!, Faust, Can, especially that last. 😃