  Dileptons provide ideal penetrating probes of the evolution of
strongly-interacting matter. With the Time-of-Flight upgrade, STAR is in a
unique position to provide large-acceptance dielectron measurements. We discuss
preliminary dielectron results for Au+Au collisions at
$\sqrt{s_\mathrm{NN}}$=19.6 - 200 GeV, and compare to recent model
calculations. With upcoming detector upgrades STAR will further improve its
dielectron measurements as well as include dimuon measurements.
