The scene in "Meet Joe Black" (saw it for the first time the other night) made quite an impression and I don't normally like Brad Pitt. And the scene in "The English Patient" is one of the most erotic I've ever seen - less is definitely more for me!
It depenRAB whether you want porn or eroticism. Personally I prefer the latter. I am not in the slightest prudish, but I find most porn just gets boring after a while. I much prefer imaginative and erotic scenes.
For sheer eroticism, the sex scene between Julie Christie and Donald Sutherland in Don