Maybe it was bound to happen. The fierce mug of Frida Kahlo and her endless depictions of it were bound to drill their way to the top of the list. Do not make the mistake, however, of brushing off this year's winner as "too easy." Local collector and influential gallery owner Martin Weinstein points to the Walker's Frida exhibit as evidence of something extraordinary happening locally and internationally. He calls it "art as event." And anyone who passed by the Walker on Frida's closing night would have seen exactly what Weinstein was talking about. Well past closing time, Walker staff members were still herding a winding line of spectators into and out of the gallery. A visitor from another planet, on reviewing our best-loved TV shows and music and sporting events, might judge our beloved heartland to be artless but for a complicated woman, long dead, who explored misogyny, mortality, and heartless politics with cautious eyes she painted herself, and who came to town to disabuse interplanetary critics and all the other haters of any such notion.