invade is a Maya MEL script, that can be used to duplicate objects in 1D, 2D or 3D, giving you also the ability to distribute the duplicated objects over any nurbs or polygonal surface of your choice.

waveIt is a Maya MEL script, that you can use to create any sort of objects waves (can be used to simulate people waves in football stadiums, or someone waving some kind of tapestry made of interconnected bars, or any other effect that needs objects to be animated in a wavy way).