The days of rap-rock collaborations on wax haven’t been the same since their peak in the late 1990s and early 2000s, when Jay-Z could be found mashing up entire albums with Linkin Park and Nappy Roots wouldn’t think twice about remixing a track with P.O.D. The rap-rock genre is an endangered species in the 2010s (even though rock is still frequently sampled for rap beats), but there is still a fire track to be heard here and there, providing an important reminder when it comes to the transfusion of two music genres that, on the surface, seem like a poor mixed drink: always do so in moderation. From Coldplay and Jay-Z to Rage Against the Machine and Cypress Hill, here's our list of the best rap-rock songs over the years.