Dream Theater - 22 (23 next week)
Metallica - 10
Sevendust - 10
KISS - 9
Rush - 8
Megadeth - 8
Queensryche - 8
Life Of Agony - 7
Anthrax - 6
Pantera - 5
Tesla - 4
If we were adding INDIVIDUALS and not sticking with just BANDS, I'd add: Jeffrey Gaines (17), Edwin McCain (6), Billy Joel (4), Ozzy Osbourne (4)