  It is shown that the radiation of a charged Higgs boson off a
third-generation quark (charged-Higgs-strahlung) provides an important channel
for the discovery of the charged Higgs at hadron colliders. Equivalently, in
supersymmetric models with explicit lepton-number (R-parity) violation,
sleptons may also be produced in association with quarks (slepton-strahlung).
Higgs- and slepton-strahlung production cross sections are given for both the
Tevatron and the LHC. The LHC cross sections imply that heavy ${\cal{O}}$(TeV)
charged Higgs bosons can be produced via charged-Higgs-strahlung and that
strahlung production of charged sleptons is possible even for small R-parity
violating couplings. The possible discovery of sleptons through this channel
offers a surprising handle on models of neutrino masses.
