Lyndon LaRouche

Okay so he's dead but believe me, none of his obituaries in the corporate media do him justice.
His RationalWiki entry is probably one of the more comprehensive accounts you will find.

I take note of his passing -- not that he was ever altogether with us -- because I have followed his career since I was a youth. My freshman year, believe it or not, two, count 'em two members of the Swarthmore College faculty were his followers, including my Philosophy 101 professor, named Uwe Henke, who is now apparently known as Uwe Henke von Parpart and is some sort of financier. LaRouche at the time called himself Lyn Marcus (get it?) and pretended to be a leftist. He founded an organization called the National Caucus of Labor Committees, which busied itself with beating up Communists and "deprogramming" people. Several of my fellow students joined the cult. In order to get an A in philosophy 101 you had to join the Labor Committee. Otherwise you got a B. Henke smoked stinky cigars during class and ranted about homosexuals and German composers. He accused one of the political science professors of being a CIA agent and of having attached a limpet bomb to a U.S. navy ship as a scuba diver, or something like that.

Anyway just a couple of years later he changed back to his real name and became a far right extremist. He declared himself the World's Greatest Economist, and maintained that he alone could save the world from a looming capital shortage and global economic collapse. He kept running for president, on the platform that Queen Elizabeth controlled the world drug trade and that both the United States and the Soviet Union were secretly under her control. Nelson Rockefeller, Henry Kissinger, and the Trilateral Commission also had something to do with it.

I won't go into the further history, but suffice it to say that he managed to forge a relationship with the Reagan administration; to raise millions of dollars, much of it fraudulently for which he eventually served prison time; and to maintain a substantial corps of followers who you may have seen manning tables at airports and on sidewalks right up to the present. I guess we shouldn't be too surprised since Alex Jones and Rush Limbaugh also have followers. Also no surprise, LaRouche was a big fan of the current Resident.