CiG
Approximately Infinite Universe
Godflesh-Streetcleaner is the first thing that pops in my mind where a drum machine is for the better. It just wouldn't have the same impact if the drums didn't have that cold machine like sound.
Well, you assume so anyway. I tend to agree, but Godflesh are inextricably tied to industrial music, rendering it somewhat anomalous in metal, in my opinion.