When i was 14 years old(94 i think) we went to see Black Sabbath with Tony Iommi and Tiamat was warming, i remember Tiamat being surprisingly heavy, but about Sabbath at that night i don´t remember so much(and it even didnt have anything to do with alcohol etc.!).Though i haven´t listened their records so much, they have been stuck at the back of my head since. Yea.