We describe two of our recent results in this direction.
(1) ``Rectifying" reflection from a magnetic photonic crystal:
Photonic analog of the Quantized Hall effect?
When an oscillating line source is placed in front of a special mirror consisting of an array of flat uniformly spaced ferrite rods, half of the image disappeared at some frequency. We believe that this comes from the coupling to photonic states of the magnetic surface plasmon band. These states exhibit giant circulations that only go in one direction due to time reversal symmetry breaking. Possible applications of this ``rectifying" reflection include a robust one-way waveguide, a beam bender and a beam splitter, which are shown to work even in the deep subwavelength scale.

(2) Kirchoff's law at finite frequencies?
To generalize Kirchoff's circuit equations for a general wire network, we find that it is necessary to introduce localized electric fields at ends and junctions of the network. With this the resonance of the recently popular split ring can be analytically calculated. We found that an electric field of 1 V/m can cause a field of 1 million V/m at an end of a wire, as we learn from our experience with microwave ovens.