4x4x4 centres are fun

I'm really enjoying the 4x4x4 at moment. There are three reasons for this. One reason is that I'm improving, so that makes me happy.

The second reason is that Dan showed me a more efficient way to pair up the edges. Ages ago when I first started solving the 4x4x4, I was doing edge pairs one-at-a-time. This is so obviously the most inefficient way to do the edges!!

The third, and most fun, reason is Stefan's method for the 4x4x4 centres. I used to find the 4x4x4 centres rather boring, but now they are the most FUN part of the 4x4x4!