Suprised noone has mentioned The Lover, with Jane March.
The only film that I actively sought out to buy because of nudity was Walkabout with Jenny Agutter...a very good film in its own right but seeing Agutter swimming around in the buff is worth every cent.
One of those films that is hard to classify. I guess that's what happens when a talented director (with at least a couple of screws loose) makes a film.
With probably one of the most convincing sex scenes in it. Great stuff.
One I did want to mention, tho it doesn't quite fit here. I bought "Anything Else" just to see Christina Ricci in skimpy outfits. Unfortunatly, it is such an awful movie, I just can't keep it around...
I'd never heard of Kelly Monaco and found the answer for Porfirio by going to the Celebrity Nude Database. Afterwards, I did an image search (SafeSearch OFF) on kelly monaco idle hands. Whoa, baby! They look it anyway, but according to one of her Playboy video titles, those babies are real! Exquisite.