http://www.youtube.com/watch?v=WEL6_SuQCu8On this day in 1986, one of the most influential metal albums of all time was released, as Metallica’s Master of Puppets came out. Cliff Burton’s last album with the band was an instant classic. From the acoustic opening of “Battery” to the last note of “Damage Inc., its eight songs showed the band at their absolute peak. Master debuted at #29, and was the band’s first album to go gold.It’s now 6 times platinum. In other news, you are officially old. Here’s a look at them playing the title track in 1989.