At first I saw the 3x3 and though it was a pretty standard stop motion but then I noticed the spinning 2x2. Then I started watching those and noticed all the other cubes were moving too. Great idea to spice up a simple video.
The 6x6 was pretty cool as well and then the 4 orbital centers were skipped which took something away to me at least. Still pretty cool the first layer and outer layers must have taken quite awhile