New Year’s open thread

Let’s openthe New Year with an open thread.  Now’sthe time at last to bring up that otherwise off-topic comment that keepsgetting deleted, or anything else you like. From Art Nouveau to Art Blakey, from presidents to presentism, fromsci-fi to Wi-Fi to hi-fis, everything is on topic.  Just keep it civil and classy.  Previous open threads collected here.