Emil Nolde (1867-1956) : A German expressionist (yes, another one), he seems to have taken the curves and circles of Edvard Munch and mixed it with some of James Ensor's colored craziness. Add a dash of Seurat-style impressionism, and some African masks, and you'll get Nolde. He seems to often paint people madly dancing or in a state of revelation, strong emotions that other expressionists seem to miss.