Bands from your childhood

What is the first band that you can remember that really took hold of you and shook the shit out of you. A band that you listened to over and over. And how old were you?

for me it was Pink Floyd, specifically The Wall. It was never in my household so hadn't heard of them until smoking cigs one day after school and a friend put it on. He was amazed i had never heard any Floyd! That record amazed me and was the first record that i can remember that totally blew my mind. I was 15.