The commercial artists who use the archaic method of actually painting ads with actual paint on the walls of New York proudly call themselves “walldogs.” There aren’t that many doing this, as giant ads nowadays are mostly pasted wallpaper of computer generated imagery. And yet, there’s a recent nostalgia-induced resurgence of the olde form’s popularity. The “walldogs” are also quite happy about confusing people as they stand there on scaffolds with their — gasp!!! — paint brushes, toiling away. One old timer likens it to performance art: “People really stop and they watch, and they want to know what’s going on, and they want to know what it is that you’re painting.” Ah, revivalists. (Photo: EV Grieve)