Color me naive, but I'm always shocked when to hear the source sample of ill beats. Always figured more work went into it than just speeding it up and fucking with the EQ (whatever that is, but apparently Dre broke new ground with EQ on "Aint Nuthing but A G Thang")
Here's Gary Numan's "M.E." the source for the massive Basement Jaxx banger "Where's Your Head At?" The breakbeat is the essence of hip-hop while the bass is stone cold.