Metallica officially launched a highly-anticipated digital Cliff Burton exhibit in their Metallica Black Box online museum.

The disparity among the names on this list is eye-popping. Metallica's self-titled "black album' alone, for example, has sold more than 17 million copies in the U.S. since it was released in 1991.

AC/DC’s Back in Black is one of 11 albums to spend 12 years on the Billboard 200, and the band joins names like Michael Jackson, Metallica, Eminem, and Nirvana. (Photo by Atlantic Records ...