If you’re in San Francisco, and you haven’t seen the current show at the Adobe Room, go. If you’re in LA, and you haven’t seen Christian Marclay’s show at the Armand Hammer, go. There’s just a few more days in the run of each exhibition. Standouts in the Adobe Room’s group show of emerging artists are mechano-abstract paintings by Melina Finkelstein, reminiscent of Picabia in a fresh, quirky way, and collages by Nathan Burazer, including a series that smacks of landscape—if that landscape consisted of mountains perched on wires like pigeons. At the other end of the state and the other end of a career, Christian Marclay combines loads of charm with intellectual sophistication in his assemblages and video collages, most of which deal with our culture’s visual customs for presenting music.