I totally agree with the "junk food junkies" assessment in your original post, but Dr. Oz advocates pseudo-science like homeopathy, and the "super salt" demonstration was probably just some trick with vinegar and baking soda.
That shouldn't stop you -- and me, for that matter -- from putting down the bag of chips and picking up a salad fork. I know I feel better when I eat better, and just a few bites of the junky stuff makes me crave more junky stuff.
It mystifies me how a guy with such an illustrious medical background can be in favor of that kind of "water memory" mumbo-jumbo.