Dr. Bill Cham has a new book out called The Eggplant Cancer Cure; his website is EggplantCancerCure.com. According to the web site, "Dr. Cham has found substances which can penetrate and kill skin cancer cells but can’t penetrate normal skin cells, so normal skin cells are untouched and unhurt while the skin cancer cells die!" He claims to have conducted extensive studies on a cream he made (called Curaderm), which contains substances derived from eggplant. The cream is rubbed on skin cancer tumors (including late stage melanoma), and in a period of months, reduces the tumors and cures the cancer. He claims it has cured 70,000 skin cancer patients in Australia, and he's working on a way to make it work on internal tunors as well.
By the way, he isn't an M.D, he has a "Ph.D. in Medicine." It all sounds great, but there are some problems. He claims that the cream has been through Stage I, Stage II, stage III, and Stage IV clinical trials, but apparently, there isn't any published record of them. His website lists a bunch of publications supporting Curaderm, but some have titles like The Skin Cancer Cure So Effective, It's Being Kept Secret.
There's a nice critique of Cham and Curaderm from a blog called Respectful Insolence, which looks at a lot of cancer cure claims like this.