6. The Rolling Stones, 'Sticky Fingers'
The second album on our list designed by Andy Warhol, Sticky Fingers was the Rolling Stones' first album for Atlantic Records – which gave them the freedom and budget to mass-produce this cover with an actual zipper. When unzipped, it revealed white underwear with the Rolling Stones' tongue logo on it. Contrary to legend, the man in the underwear is not Mick Jagger. It's one of Warhol's associates, though nobody seems to be able to agree on exactly who it is.