I think, her best show is the Top Executive. Nancy is really elegant in that white blouse/black skirt combination. But the really sexy things happen when she pulls up or down that long black skirt... temptress from head to toe, even in non-nude scenes, for example, when she wears the white blouse with black panties...
Same is true for the other best card (Dinner & Dancing). She wears an exciting black dress in that and the show is a great compilation of nice upskirt scenes.