Six Essential Thrash Albums
Kreator - Terrible Certainty (Noise, 1987) - the recent reissue, featuring 'Out Of The Dark ... Into The Light' as a bonus, is recommended.
Metallica - Black Album (Elektra, 1991) - yes, a lot of people hate this album, but that isn't to say it isn't great.
Testament - The Best Of (Atlantic, 1996) - a definitive collection of their early material.
Annihilator - The Best Of (Roadrunner, 2004) - includes all of their best tracks.
Sodom - In War And Pieces (Steamhammer, 2010) - an excellent offering from this outstanding band.