Arguably one of the most iconic faces of counterculture, Nirvana ironically became the symbol of '90s youth — a period defined by a rejection of the overly manufactured pop and hair metal of the '80s. But their defiance of the mainstream was never just a gimmick. Beyond their breakout hit "Smells Like Teen Spirit," Kurt Cobain, Krist Novoselic, and Dave Grohlmade history because they were uncompromising in their values. Whether refusing to tour with a hugely successful glam rock or declining to lip-sync on Top of the Pops, they consistently stood their ground, even against rude, entitled fans.