they did some study (admittedly a pissweak one) into music that makes you drive agro here in australia.
prodigy's firestarter came up as the worst (or best depending on your angle).
oddly enough, 'fat of the land' is a CD that never leaves my car, and 'firestarter' is the one i always let rip.
im yet to kill anyone while listening to it, but ive come close.
for the record, other worthy tunes
be quiet and drive - deftones
anything by TOOL
jesus christ pose - soundgarden
almost any live set by Paul van Dyk