What makes Shock to the System by Billy Idol notable?

The album marks a notable return for Idol, featuring tracks that reflect the grunge influence sweeping through rock music in the early '90s. 'Shock to the System' reached number 20 on the Billboard 200, demonstrating his continued relevance despite evolving musical trends. Released in 1993, 'Shock to the System' was Billy Idol's first studio album in nearly a decade, following his 1987 album 'Charmed Life'. At this point in his career, Idol was attempting to reinvigorate his presence in the music industry after a period of personal struggles and decreased commercial visibility.