And while I'm at it, why not raise this pony a couple inches.
@Those who said Angela Gossow: I think she might beat out Cynic's first album for 'most robotic vocal performance in metal'.
@Those who said Phil Anselmo: I'll give you Down. Everything else (Pantera especially), get a pig and kick him in the dick. Voila, you've got your new frontman for that Pantera cover you want to play at your next show.
@Those who said Randy Blythe (particularly the one who said 'the best vocals in modern metal'): Raise your standards, listen to Cephalic Carnage and Pig Destroyer and hail Satan, etc.
I also forgot Tim Owens(Best singer Iced Earth ever had), Don Doty/Ron Rinehart(Dark Angel, Bobby Blitz(Overkill), Harry Conklin(Jag Panzer) and John Tardy(Obituary).