I could try and be cool and say some hardcore bands but in truth it started for me with nu-metal and poppy alternative music -
The main band to do it for me was, believe it or not - Everclear, Sparkle and Fade. Back then it was the 'hardest' music I had heard, and initially made me interested in other music. Nirvana too. That and Korn, I never bought any albums but I saw Blind on TV and thought: "oh my god!! thats so cool! man thats hardcore!!" foolish youth I was. Also Foo Fighters and, don't kill me for this - when I was seven I liked Michael Bolton, I quickly grew out of it but - THE SHAME!!! OH THE SHAME LIVES ON!! WHY???? WWWHHHYYYY?????!!!!