Robert Anton Wilson advocated a basic income guarantee -- he was agnostic about the form it would take -- and the idea continues to bubble up.
Allen Sheahen has written a new book about the idea, A Basic Income Guarantee: Your Right to Economic Security. Well, actually it's an updated version of an old book.
The excellent Dangerous Minds blog recently has run two pieces by Sheahen, one here and a followup piece here.
Sheahen is a leftist. But interestingly, a look at the reviews of Sheahen's book on Amazon show that his book is endorsed by Charles Murray, the libertarian writer who advocated a basic income guarantee in his book, In Our Hands.
I suppose it doesn't have anything to do with Sheahen's argument, but I notice that while the Kindle price of Murray's book is a reasonable $11.72, Sheahen's tome costs $25.27.