The top quark, with its extraordinarily large mass (nearly that
of a gold atom), plays a significant role in the phenomenology of EWSB in
the Standard Model.  In particular, the top quark mass when combined with
the W mass constrains the mass of the as yet unobserved Higgs boson.  Thus,
a precise determination of the mass of the top quark is a principal goal of
the CDF and D0 experiments.  With the data collected thus far in Runs 1 and
2 of the Tevatron, CDF and D0 have measured the top quark mass in both the
lepton+jets and dilepton decay channels using a variety of complementary
experimental techniques.  I present an overview of the most recent of the
measurements.