Sophisticated algorithms and hardware advances, recent and not-so-recent, have propelled the field of lattice QCD to the forefront of large-scale high-performance computing. Are condensed matter theorists reaping the benefits of these developments? In this talk I will discuss two cases in which lattice QCD methods are directly applicable to condensed matter systems: graphene and cold atoms in the BEC-BCS crossover. Disclaimer: This talk will have significant overlap with the talk I gave at the recent QMBT conference here at OSU.