Featuring the group’s electrifying leopard center chest, this new Def Leppard addition pays homage to the boys’ third studio album “Pyromania.” An honorable mention due to it being the first work to feature Phil Collen after the departure of Pete Willis, and it being a sound shift away from the group’s traditional heavy metal to a more radio-friendly offering. “Pyromania” ultimately charted No. 2 and brought the band into mainstream success.