Operation Ivy

Energy defined a genre and a generation with an innovative sound and a universal message. Marrying furious, late-'80s punk with catchy third wave ska, this lo-fi firecracker featured bristling guitars, sing-along choruses and intelligent lyrics about self and social politics, influencing everyone from Green Day to No Doubt. Though they broke up before this, their lone full length, came out, the mark made by these 27 tracks is immeasurable. Can't-miss anthems include "Knowledge," "The Crowd" and "Unity."