Nirvana hurtled to the forefront of the grunge revolution with their masterful 1991 album Nevermind, and for a few sweet years, it seemed like anything was possible for them. We'll never get Kurt back, but the Seattle legends' legacy lives on across the alternative spectrum—in Sleater-Kinney's juggernaut riffs, in Muse's spacey glam, and even in blink-182's amped-up pop-punk.