I like the idea of four-inch paintings the same way I like the idea of six-word stories — both require making the most of very little, and confronting the challenges of limited space with creativity and care. With their four-by-four-inch works, Michael Dumontier and Neil Farber manage to tell stories tinged with mystery, humor, and darkness, capturing worlds much bigger than the confines of their tiny canvases. See for yourself, here.
I'm also a longtime fan of the brilliant Animals with Sharpies series, which, as it happens, was the topic of one of my very first posts on this site. See more recent work on the blog Personal Message, here.