My husband hadn't heard of him, so I had to dig out the Wikipedia entry. He's this guy:
http://en.wikipedia.org/wiki/David_IckeIcke argues that humanity was created, and is controlled, by a network of secret societies run by an ancient race of interbreeding bloodlines from the Middle and Near East, originally extraterrestrial. Icke calls them the "Babylonian Brotherhood." The Illuminati, Round Table, Council on Foreign Relations, Chatham House, the Trilateral Commission, the Bilderberg Group, the IMF, United Nations, the media, military, science, religion, and the Internet are all Brotherhood created and controlled. The Brotherhood is mostly male. Their children are raised from an early age to understand the mission; those who don't are pushed aside. Key Brotherhood bloodlines are the British House of Windsor, the Rothschilds, the Rockefellers, European royalty and aristocracy, and the Eastern establishment families of the United States. At the apex of the Brotherhood stands the "Global Elite," identified throughout history as the Illuminati, and at the top of the Global Elite stand the "Prison Wardens." The goal of the Brotherhood—their "Great Work of Ages," or the "Brotherhood Agenda"—is world domination and a micro-chipped population. . . .
In The Biggest Secret (1999), Icke introduced the "Reptoid Hypothesis." He identifies the Brotherhood as originating from reptilians from the constellation Draco who walk on two legs and appear human, and who live in tunnels and caverns inside the earth. . . . For Icke, Sumerian Kings and Egyptian pharaohs have all been Aryan reptilian humanoids, as have 43 American presidents and the Queen Mother, who he writes was "seriously reptilian." All have taken part in Satanic rituals, paedophilia, kidnapping of children, drug parties and murder, needed to satisfy their reptilian blood lust, which allows them to retain their temporary human form. . . .
According to Barkun, Icke has actively tried to cultivate the far right. In 1996, he spoke to a conference in Reno, Nevada, alongside opponents of the Brady Handgun Violence Prevention Act—which mandates background checks on people who buy guns in the United States—including Kirk Lyons, a white nationalist lawyer who has represented the Ku Klux Klan. Barkun argues that the relationship between Icke, the militias, and the Christian Patriots is complex because of the New Age baggage Icke brings with him, and he stresses that Icke is not actually a member of any of these groups, but it is nevertheless true that Icke has absorbed the world view of the radical right virtually intact. "There is no fuller explication of its beliefs about ruling elites than Icke's," he writes.