Norton Speed Disk [1] for DOS was more satisfying to watch because it would visualize reads and writes. So you'd see it grab blocks and then smush them together into contiguous areas. The Windows version was not, as I recall, as satisfying.

[1] https://youtu.be/-T712Wbc6a0

Speed Disk for Mac was even better because it used fun colors and _really_ showed things moving around. https://www.youtube.com/watch?v=FUKvTe1q7CE

You should see Norton Speed Disk for Windows defrag a DriveSpace volume! It's two step process.