Some rap I do like--which I feel has a vocal/musical quality and shows thought is put into the songs to make them "songs".

DMX
Black Eyed Peas
Outkast
Eminem
Beastie Boys
Run DMC

Evry thing else sounds the same to me. But I am sure the same thing can be said for ALL types of Music (I feel the same way about country music I only like a handful of artists)