now that is a hard one, i can't choose just one.... slipknot's self titled album, would have to be one of them, marshal mathers and slim shady lp are a couple more, evanescence's first album, hybrid theory and meteora... those are just a few, any of those cd's i can put into a cd player and listen to non-stop over and over. i can sing most of the songs from eminem and all of the ones from slipknot too.