I'm getting into rap extremely slowly. There are some artists (namely Kanye and the Streets) who I obsessed over after first hearing them, there are others that I have difficultly liking but eventually grow on me (Common, Public Enemy), and then a whole slew of artists that just plain suck (50 Cent, Nelly).
But it's been an interesting experience so far and without MX I likely wouldn't listen to rap at all.
edit: Dizzee's accent is awesome.