Einsturzende Neubauten
But seriously though, kollaps definitely ain't an easy listen. Halber Mensch is a bit more refined and listenable, but I like the weird nature of kollaps
They have only been a recent discovery though and I haven't listened to much other than these two.
Echo & The Bunnymen - Never really checked them out although their name keeps coming up every now and then around these boards. I'll listen to it someday! When I'm done with these compilations.