I used to play wallball and baseball with my friends outside in the back alley near our spot(a wall of a then-laundry cleaning store). One of the men who lived there would blast Morbid Angel, Metallica and Alice in Chains. He would turn the music up louder as he joined us in baseball. We were about 7, and he was 19, so he had a lot of wisdom as far as metal goes. When we were done playing, we went into his basement and watched his band jam. He actually taught me how to play drums, and from that point, I knew all the songs on the Alice in Chains album Facelift. So I started on Metallica, Morbid Angel, Glam Rock from those Infomercials, and Alice in Chains.
As I got older, I endulged myself into pop music like the Backstreet Boys and Spice Girls as I kept adding to my metal playlist.
Then I got into the mainstream shit, like Korn, Marylin Manson, Disturbed, etc.
I quickly grew out of that after hearing In Flames played on my local radio station, and it's all uphill from here.