Melanie Griffith and Don Johnson, Night Moves, 1973.
It would be too harsh and/or inaccurate to say that Mary Ellen Mark is the anti-Liebovitz, but I have to say that (predictably) I love the rawness of her work, and applied to celebrities, it provides a much more interesting perspective to me than high-concept Vanity Fair type stuff.
The cast of One Flew Over the Cuckoo's Nest, Salem, Oregon, 1973.
More info at maryellenmark.com, or buy it here or at your favorite bookstore while supplies last.