No, not Channukah. This festival runs through New Year’s. It’s five free tours, one on bikes,that visit various dazzling light exhibits across the City. In galleries like Trillian+ Dodi in Hayes Valley and Anima in Mission Bay and public spaces like Yerba Buena, SFO and the Civic Center, there are well over a dozen of these gleaming spectaculars. A lot of credit for this retinal renaissance goes to Leo Villareal’s Bay Bridge nightly, and thankfully permanent, light show.