  I present theoretical results for the top quark pair total cross section, and
for the top quark transverse momentum and rapidity distributions at Tevatron
and LHC energies. I also present results for single top quark production in the
t- and s-channels and also via associated production with a W boson. The
calculations include approximate NNLO corrections that are derived from NNLL
soft-gluon resummation.
