As you know I love materials, but what are materials made of? Atoms: protons, electrons, and neutrons. Duh. And what are those made of? Quarks. Meet the stuff that the stuff that makes up stuff is made of.
Watch this incredible lecture by particle physicist Daniel Whiteson at CERN, and learn about quarks, mass, and the mysterious/potentially non-existant Higgs Boson. Drawings by George Cham of PhD Comics.
Dark Matter. (totally a material) Be prepared to have your mind boggled.