The four neo-punk/pop upstarts from Toronto who make up Sum 41 formed the band while they were all still in high school, and the youthful exuberance of those days can still be strongly felt in their 2000 debut EP HALF HOUR OF POWER. The endearingly bratty skate-punk sound of that recording placed the band in the sonic company of Blink-182, with whom they would eventually tour. Sum 41's first full-length album ALL KILLER NO FILLER was the band's major chart breakthrough, establishing them as a force to be reckoned with.