Robert Duesberg's crankish idea is that HIV does not cause AIDS. However he is also known as the virologist who first identified a cancer-causing gene and he goes back to this area in this article published in Scientific American. He proposes that a derangement of chromosomes rather than individual genes is the cause of malignancy in cells.
I haven't read the article yet but it sounds interesting...as do most of the other articles. Ah, there is so much interesting STUFF in the world...so many books, so many films, ideas, theatrical productions, websites, blogs... I wish I read, watched and thought with greater efficiency.