"underground" is the gayest word ever used, it's used by white guys who own skateboards who dont like hearing rappers talk about owning possesions,
anyhow, eminem has some heartfelt shit, but surprising, what sells his albums are those songs for the demographic of 6-15, im sure he knows this, but when em makes a deep statement, its definently some thing to rewind and listen to again and again, eg (d12-album devils night, all pretty solid verses, most of the marshall mathers LP)