I must've been like 10 or 11 years old, and I remember I was on vacation at my cousin's house, I wasn't even interested in music at that time but for whatever reason we were watching MTV and the In The End music video came on, and I was like "HOLY SHIT THAT WAS FUCKIN AMAZING WHAT BAND WAS THAT???"
Didn't really like them when i first saw them on the TV. One Step Closer was too scary/angry for me when i was 10. Then i was at a friends house and he showed me the whole Live in Texas dvd and i became a huge fan. Hearing Breaking the Habit sealed the deal.