timbaland and dr.dre are the obvious..... they're like the greatest of our time... but im surprised nobodys mentioned Polow da don!???? he running the radio right now, he's gona be right up they're with dr.dre and timbo pretty soon... and just blaze holding down the samples like nobodys bizzness till this day... and kanye west ... yes kanye west can git down on that tr-808 i dnt care wut nobody says...