Perlin Noise (and it's successor Fractal Noise) are incredible bang-for-your-buck when adding realism and/or an "organic" feel to things. You can see it used t

Perlin Noise (and it's successor Fractal Noise) are incredible bang-for-your-buck when adding realism and/or an "organic" feel to things. You can see it used to great effect, for example, in Aladdin (1992) for the scene where they escape from the Cave of Wonders.