BEST: Sir Kendrick the Dragon-Rider
It could have been an instant entry in awkward Grammy mash-up history: Kendrick Lamar, the fiercely original Compton rapper, sharing a stage with Vegas modern-rock bros Imagine Dragons?! But somehow, against all odds, this cross-genre medley actually kicked considerable ass. Imagine Dragons gave an amped-up rendition of their hit "Radioactive," then played backing band for Kendrick on his "m.A.A.d city," adding some extra muscle to the rapper's adrenaline-juiced storytelling. Rap-rock hasn't sounded so tight since Y2K.