21. How To Clean Everything
Year released: 1993
The punkers of the '90s figured out there was nothing wrong with a little sense of humor in the music. Propaghandi's classic How To Clean Everything translated the already-iconographic hard-edged X and notions of "cleansing" into something cheeky, while still bowing to a sense of history (a field they'd become more fascinated with as they grew more activist).