Good vid. I've always liked the write-up about fugue in Aaron Copland's book, What to Listen for in Music, which discusses it similarly.
Personally, one of the things I like about fugue is the nature of the start. Just a bit of melody - deceptively simple. "Hey, that's easy. How hard can this be?" And then the piece takes off and you hang on as it gyrates every which-way, multiplies itself in layers, turns things upside down and backwards... Hah.