FWIW coming from some random stranger on the internet, I like the animations. They're short enough that even though all the information isn't on the screen at

FWIW coming from some random stranger on the internet, I like the animations. They're short enough that even though all the information isn't on the screen at once, I can remember/interpret the whole thing after it's run once. I could also imagine for demonstrating longer-running bugs (of more than just a few instructions) a user-controlled slider might be nice.