Spiral Sine in Helix and Mandelbrot Plots

These are interesting math graphing links.

1. Here's a Sine Spiral Graphed on a Helix (slightly animated),
by Justin Coslor.  
http://ia700702.us.archive.org/12/items/SineSpiralGraphingForHelixOrbitTrigonometry/JustinCoslor2011SineSpiralGraphing-Animation.gif

and
2. a way to generate Mandelbrot Plots:

from http://www.flashandmath.com/advanced/mandelbrot/MandelbrotPlot.html
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Can you find any more Mandelbrot sites?
Google images of Mandelbrot plots...

This site teaches Flash as well!

Goodnight!
Sara