An overview and simple example of photoelectron imaging is presented, highlighting its efficacy as a pedagogical tool for visualizing quantum phenomena. Specifically, photoelectron imaging of H[superscript -] (the simplest negative ion) is used to demonstrate several quantum mechanical principles. This example could be incorporated into an introductory quantum chemistry course to extend the traditional discussion of the photoelectric effect and photoelectron spectroscopy into the area of matter waves. In working through this example, several core quantum-mechanical topics and concepts have been explored, such as conservation of angular momentum, the transition dipole moment, components of the hydrogenic orbitals, the Born interpretation of the wave function, and the theory of quantum measurement. (Contains 4 figures and 1 note.)