DIY Sweeping Powerhead-Anyone ever see this?

Its a two part video…you can go into his profile to play part two, but here are the links…
he made a sweeping powerhead using an oscillating fan …

Part 1
http://www.youtube.com/watch?v=mdz_KDVUduo&feature=channel
Part 2
http://www.youtube.com/watch?v=HNYXuzQlKP8&feature=channel