What was the first punk band that made you think, "Hey! I like punk music. It is the bomb!?" That band would then have you listening to punk music for years to come.
The band that got me into punk was probably the Clash. They were actually the first band I ever bought a CD of. I believe I was about... 9 or 10 years old. I still wasn't too much into punk though until I listened to the Ramones. My friends introduced me to them when I was 11 and I've been listening to them ever since.