Best Heavy Metal Band of all time. (Do people still listen to metal?)

I think Tony Iommi is a much more dynamic guitarist than most folks realize. My older sister's friend's boyfriend taught me a few songs when I first started playing in like 1980.....he was sharing experiences he had in the music scene...he saw Sabbath in the early 70's and said that before the show Iommi came out and played an incredible 20 minute or so set of jazz guitar....totally floored the musicians in the audience....
Iommi is a cool guy as well. My son was recounting a story he heard about how Iommi frequented a local pub in his hometown. He was pretty quiet and just became one of the regulars. One night he showed up at he pub wearing a navy blue outfit and the regulars yelled at him until he went home and changed into his trademark all-black. When he returned, he just smiled and said "Happy now?"