A Business, Branding and Marketing Lesson . From Legendary Rockers ZZ TOP! . . With hit-singles like "La Grange," "Cheap Sunglasses," "Legs," and "Sharp-Dressed Man," and with smash-hit albums like El Loco, Eliminator and Afterburner, ZZ Top has firmly cemented its place among the immortals of Rock ‘n Roll. There is not a list of "greatest …