The de Young is currently running an exhibit of Jane Hammond's paper compositions. They're very clever; a balance of cultures and whimsey. Its the sort of show that makes you want to go home and play with construction paper and glue.
My favorite was this print called "My Heavens!" In detail, you see imaginary constellations of lobsters, ballerinas, gymnasts mapped out on a deep blue background. It's stunning in person. You can get a sense of it by clicking on "prints" on her site and then zooming all the way in.