Let Oprah know you don't approve of her giving a TV show to anti-science loon and former Playboy Playmate Jenny McCarthy. Promoting paranormal woo is one thing. This anti-vax stuff is downright dangerous, and threatens to once again unleash diseases like measles upon us in force which we once had under control.
Jenny McCarthy is the perfect answer to the question "What is the harm?" when people defend sloppy irrational thinking.