October marks 20 years since the release of Linkin Park's debut album "Hybrid Theory," setting the band apart from its contemporaries while reworking the rock genre to fit new audiences looking for genre-bending, mash-up sounds featuring heavy hip-hop, electronic, and hard-rock influences. Of course, Linkin Park would go on to be one of the most recognizable and influential bands of the early 2000s, cementing its place in the annals of modern rock history.