Over time I've created various examples demonstrating more advanced animations and scripting as response to questions and requests on the forum. This post lists all of them available for download:

Mouth animation:
https://github.com/mbojic/example_mouth

Butterfly animation (following a path):
https://github.com/mbojic/example_buttefly

Symbols within symbols:
https://github.com/mbojic/example_symbol_within_symbol

Parallax scrolling (interactive - move mouse to the sides to scroll):
https://github.com/mbojic/example_parallax

Flexible layout example with docked/relative animations (resize browser window):
https://github.com/mbojic/example_flex

Blurring and scaling in one animation:
https://github.com/mbojic/example_blur_and_scale

Webkit masking:
https://github.com/mbojic/example_webkit_mask

Opacity sampling (WARNING: this example will work correctly only if you deploy it on a server due to cross-domain security)
https://github.com/mbojic/example_opacity_sampling