It is now well accepted that poppers (nitrite inhalants) are virtually the sole cause of all Kaposi's Sarcomas, not HIV.
David Crowe
President of Alberta Reappraising AIDS Society. He has written many articles as well as technical letters in major journals dealing with health related issues. He is, as of 2008, working on a book project called The Infectious Myth. A video interview with him can be found here: Part 1, Part 2, Part 3.
Stefan Lanka
Ph.D. and virologist in Germany. He has written a few very informative and scientific papers explaining what AIDS is, and what it isn't. He appears on the documentary called Deconstructing the Myth of AIDS. A list of some of his writings can be found here. Also a very thought provoking interview transcript with him.
Peter Duesberg
Ph.D. and professor of molecular and cell biology at Cal Berkeley. Duesberg is one of the best known scientists who questioned AIDS. He in fact was a colleague of Robert Gallo, and worked extensively with retro'viruses.' More information can be found at his website.
Eleni Papadopulos-Eleopulos & Val Turner
Biophysicist and Emergency Physician who are the leaders of Royal Perth Group of Australia. The Perth Group has argued, like Stefan Lanka, that HIV has never been proven to even exist, considering for intsance lack of isolation, lack of any animal model, and lack of any coherant predictions.
Celia Farber
Journalist who has written for Gear, Spin, Esquire, Rolling Stone and Harper's magazines among others. Farber is significant because at a time where generally nobody in the media would be courageous enough to examine alternative AIDS views she did not allow herself to be pressured and censored. She was herself interviewed here.
Charles Geshekter
Professor emeritus of African history at Cal State Chico. He has written articles and given interviews concerning the misguided notion that AIDS is the cause of all the ills in Africa. He speaks in some of the audio interviews found in the media section of this site. You can also see a video interview with him here: Part 1, Part 2, Part 3.