7) Lucas Haas and David Arquette in Johns

A teen male prostitute new to the streets teams up with older, jaded guy of the same profession to learn how to turn tricks on Santa Monica Blvd. Hey, my old neighborhood!

8) Shelly Mars in The Virgin Machine

Not really about a whore, but a German film about a lesbian stripper who seduces a chick new to the lesbian scene and leaves her emotionally empty by the end. Good stuff and beautifully shot.
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"What I do know is that if Karen Carpenter and Mama Cass Elliot had shared that sandwich they'd both be alive today." -Michael K