Original Black Sabbath bassist Geezer Butler had wanted to embark on a solo recording career since back in the '80s, but the opportunity -- and more importantly, the right group of musicians -- was never provided to the godfather of all heavy metal bassists until 1995 when the musician released Plastic Planet on TVT Records under the moniker of GZR. While many fans might have been unaware of the group's substantial metal lineage due to the confusing name, those in the know were surely sated by GZR's ultra-heavy aggro thrash metal. Joining Butler on Plastic Planet are Burton C....