Drawbot animation that takes advantage of the strange aliasing effects of quantized trigonometric functions. The result is here: https://twitter.com/pents90/status/701557854147362817

trigAliasing.py

# DrawBot
import math;
SIZE = 512
FRAMES = 120
STEP = 8
size(SIZE,SIZE)

for t in xrange(0, FRAMES):    
    fill(0,0,0)
    rect(0,0,SIZE,SIZE)
    for x in xrange(0, SIZE, STEP):
        tx = math.cos(x * math.pi * 2 / SIZE + math.pi) + 1
        for y in xrange(0, SIZE, STEP):
            ty = math.cos(y * math.pi * 2 / SIZE + math.pi) + 1
            if (math.sin(tx * (t + 1) * ty) < 0):
                fill(0,0,0)
            else:
                fill(1,1,1)
            rect(x,y,STEP,STEP)                    
    if (t < FRAMES - 1):
        newPage()
saveImage(u"~/Desktop/animation.gif")