some animals would be nice. Nothing TOO complex, just a herd of gazelle or something every now and then. Also, some random weather which the random animals react to? Oh yeah, I reckon some kind of SIMPLE evolutionary program which gradually changes each generation of random animals. Just simple stuff like that would make this AWESOME!
lineTo();... each one is just a series of points, a certain distance from the previous point, in a certain direction that keeps changing. ^^ It just redraws it every frame, and the amount it turns by at every point gets bigger or smaller...
The leaves moving with the vines is what impresses me most. :3