Top Quark Pair Production at the Tevatron
  The measurement of the top quark pair production cross section in proton-antiproton collisions at 1.96 TeV is a test of quantum chromodynamics and could potentially be sensitive to new physics beyond the standard model. I report on the latest t-tbar cross section results from the CDF and DZero experiments in various final state topologies which arise from decays of top quark pairs. 
Jason Nielsen (for the CDF and DZero collaborations)