The South Pole Telescope is dedicated to mapping several thousand square degrees of the southern sky at millimeter wavelengths. Four years into the survey, we are using the data to better understand the formation of large scale structure in the universe, and to constrain the character of the elusive Dark Energy which dominates the energy density of the universe but is (so far) not at all understood. In this talk I will describe the SPT and our recent findings, and discuss how upcoming results and future work will shed further light on the nature of things Dark.