Thank god someone mentioned Nailbomb! Man they are awesome! It's like Soulfly meets Industrial...which it basically is since it's Max lol. Their one albumn was SO ahead of it's time, it still sounds great today.
The Electric Hellfire Club - Electronomicon also smokes. Their other albumns are retarded for me, but Electronomicon has some sweet heavy riffs with good industrial songwriting. All metal!
Rammstein is good, and so is Ministry.
I also like Stabbing Westward and Gravity Kills. Not metal per se, but some somes are pretty heavy and catchy.