Randell Mills

Randell L. Mills, M.D. is a dairy farmer's son who purports to have invented "the new fire" by debunking quantum mechanics and, in the process producing the book, Grand Unified Theory of Classical Physics. Scientists say he's a kook if not a con artist who has been promising a energy revolution for decades, with some accusing him of bilking investors of tens of millions of dollars. However, his company boasts some directors with impressive business backgrounds.

The American Physical Society's Robert Park says of the farm boy cum Einstein, "It's the American story but he's still wrong."

Steven Chu (Nobel laureate physics and Obama's Secretary of Energy) says, "I feel sorry for the funders, the people who are backing this."

The list of comments like this from authorities like this goes on to the point of being boring — although some are amusing enough to quote for a tl;dr:

Phillip Anderson (Nobel laureate physics), regarding Mills's "hydrino" form of hydrogen providing the Duke Nukem Forever energy revolution quips, "If you could fuck around with the hydrogen atom, you could fuck around with the energy process in the sun. You could fuck around with life itself. Everything we know about everything would be a bunch of nonsense. That's why I'm so sure that it's a fraud."

Oh, and in case you were wondering whether he has a suppressed cure for cancer that was published in Nature, as well the suppressed Grand Unified Theory, you're in luck!

In real physics
In physics, quantum mechanics is widely regarded as the most successful quantitative theory ever produced while Mills attacks the statistical basis of QM and claims instead that nature is best described by classical, Newtonian, physics.