Periodic Table of the Elements.
Pure water. And nothing but.
Nice idea, the only problem is that if you were to drink water that is only made up of H and O, it would kill you. It's distilled water, which is toxic. I'm sure this mineral water contains many minerals. I guess half of the periodic table would in that bottle in reality. Nevertheless for the half educated it's a great ad.
Credit: Crawford Douglass/Little Rock