Metallica is a heavy metal band from Los Angeles, California, that was formed in 1981. They are widely considered one of the most influential and commercially successful bands in the genre, known for hits such as "Enter Sandman" and "Master of Puppets".
The font used in the most recent Metallica logo is remarkably close to a font called "Pastor of Muppets" created by Ray Larbie. You can download the font for free in the Fonts Used Section.