This was a great movie and truly what I would consider one of the greatest love stories ever filmed.
Yes, this movie is about illness, the dying process and death. But what it truly is, is an in-depth examination of the loving, nontraditional relationship between a master and her slave. There are so many ranges of emotions expressed by both parties. It shows the selflessness of the two, as well as the selfishness (at one point, Sheree expresses her anger about Bob's dwindling sex drive, despite that fact that he is clinically dying).
What I found particularly touching about this film was the inner workings of Bob and Sheree's relationship. He chose to deal with his physical (and emotional) pain by inflicting more pain on himself, and Sheree played into his needs so incredibly. There is a lot to be said about someone who stays with someone knowing the oncoming doom. There is also a lot to be said about a relationship between two people who fit so completely perfectly that every strange want and need is satisfied by the other.