  I present high-order calculations for single-top production in the Standard
Model and in models with anomalous top-quark couplings. Theoretical results are
presented for total cross sections and top-quark transverse momentum and
rapidity distributions for the $t$ and $s$ single-top channels as well as for
the associated production of a top quark with a $W$ boson in the Standard
Model. Corrections from soft-gluon emission though NNNLO are included. I also
show results for the associated production of a top quark with a $Z$ boson in
processes involving anomalous top-quark couplings.
