I love the "wave", I guess it is from the 4 hours without light (I think they mentioned a 20 hour veg cycle) and the leaves droop and then perk up again.
that was any awesome video. and the hole makign them move is the watering, in combo with nutes, and light. IMHO i like the close ups of the nugs actually growing, watching the pistils get longer than start to get fatter that u see new pistils come shooting right out.