If there is one artist who has successfully revisited the theme dear to the Impressionists and Pointillists, it is the Japanese artist Yayoi Kusama. It is impossible to miss her work: an explosion of red, yellow, and black dots applied to all kinds of objects and surfaces. For example, this photograph captures one of her works, created from 1,200 red dots, installed in the Glass House of architect Philip Johnson, her longtime friend. Our artists are equally inspired by the dotted pattern in our selection of the week...