Abstract
I will present a review and status update of Non-Relativistic QCD (NRQCD)and its application to charmonium systems. In particular, I will bediscussing the production of charmonia at colliders and critically examinehow well NRQCD fares in describing the available data. To do this, I willbegin by presenting a historical account of the theoretical models thatwere developed to understand charmonium production and how these led to thedevelopment of the effective theory approach that we call NRQCD.
