  We show the possibility to entangle radiation modes through a simple
reflection on a moving mirror. The model of an optical cavity having a movable
end mirror, and supporting different modes is employed. The mechanical motion
of the mirror mediates information between the modes leading to an effective
mode-mode interaction. We characterize the modes' entanglement on the basis of
recent separability criteria. The effect of the thermal noise associate to the
mirror's motion is accounted for. Then, we evaluate the performances of such
{\it ponderomotive entanglement} in possible applications like teleportation
and telecloning.
