  We study charge ordering driven by Coulomb interactions on triangular
lattices relevant to the Wigner-Mott transition in two dimensions. Dynamical
mean-field theory reveals the pinball liquid phase, a charge ordered metallic
phase containing quasi-localized (pins) coexisting with itinerant (balls)
electrons. Based on an effective periodic Anderson model for this phase, we
find an antiferromagnetic Kondo coupling between pins and balls and strong
quasiparticle renormalization. Non-Fermi liquid behavior can occur in such
charge ordered systems due to spin-flip scattering of itinerant electrons off
the pins in analogy with heavy fermion compounds.
