Math, computing and art have had a long history together and the American Mathematical Society has just posted a gallery of stunning images from this year's exhibition. If you click on one of the works. you can also send it as an e-card - modern times indeed.
Mathematics and art go together because the math provides visual concepts that go beyond the everyday. Math and art go with computing because the computing provides a way to realize the visual concept.
(Click to see site display)
This year's AMS art exhibition features a lot of images that are strictly mathematical in nature - toroidal graph embeddings, mobius bands and so on - but many derive directly from the interface with computing, mostly fractals. For example, try Sierpinski Cliffs or Julia weaves.
There are also some updates on clasics such as the hyperbolic tesselations made famous by Escher's Angels and Demons.