[Z]

I dunno, I guess he stands out for various reasons - he writes witty lyrics, he makes pops at various figures in popular culture, his music is radio friendly, the anger behind some of his songs is remarkable, he's done collaborations with the right sort of people at the right sort of time (Dido at her peak, Rihanna at her peak to give two examples off the top of my head) to remind everyone he's still on top of his game. Sure he's had a few misfires but most artists have; I think he's that accessible bridge between pop and the rap genre, in the same way that Jay Z or Kanye West are, for example.