The music of Led Zeppelin was extremely diverse, encompassing elements of blues-based hard rock, folk, progressive rock and even world music. But the heart of Zep's mystique for many fans seemed to lie in their dark sex appeal, epitomized by singer and front man Robert Plant.

Zeppelin's groupie exploits became the stuff of rock legend -- and lyrics like "Squeeze my lemon 'til the juice runs down my leg" probably didn't help put Plant on a lyrical par with guys like Paul Simon, either. But Plant has gone on to a career that consistently explored many diverse elements, emphasizing music over money and fame.

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