I bought a Black Sabbath greatest hits album back when I was in high school. I'd never heard of Dio, but I wanted to check out Black Sabbath because I was getting into Ozzy's solo music at the time. But this collection had some Heaven & Hell, Mob Rules, and even Born Again tracks on it. The first time I even heard Dio was when "Heaven & Hell" came on. I was just floored. I was like, "Who the fuck is this singing!?" Since I was just expecting Ozzy... I've been a fan of Dio ever since.
I'm really glad I had the chance to meet him in 2004. My buddy and I only got to talk to him briefly but he was very friendly and chatty and signed a whole bunch of shit. It was just a great time.