Incredible.

We're not Eminem fans (he not our cup of coff - in fact his vocals make us 'baulk') but this Rihanna hook/chorus is so tasty we're tempted to make an exception. Of course, this song would be a million times better to us if it were just Rihanna, but there we go. We realise bajillions of Eminem fans exist so we won't protest any further.