4. Gorillaz (1998 - present): Over the course of their existence, Gorillaz evolved from their silly initial conceit of being a modern-day Banana Splits to a faceless, shape-shifting pop collective with no conceivable artistic boundaries. At their most inclusive and insane -- 2010's Plastic Beach -- the Albarn-led band was working with everyone from grime artist Bashy to Brit-rapper Kano ...