Alameda County, California will honor musician on what would have been his 56th birthday
Band talks riffs, "studio secrets" and Cliff Burton's impact during two-part episode of drummer's 'It's Electric'
Exhaustive box set features concert recordings, demos and other rarities
Musician criticizes sisters' controversial line featuring their faces superimposed over artists, band logos
Heavy metal legends fend off Bruno Mars and Miranda Lambert for sixth consecutive Number One album