Here are links to the animations referenced in the article.
Movie 1: Bar Instability induced by Satellite Interactions Quicktime (320x240),
Quicktime (640x480),
MPG (320x240)
Movie 2: Spiral Galaxy Fly By Quicktime (320x240),
Quicktime (640x480),
MPG (320x240)
Movie 3: Disk Response from Satellite Interactions Quicktime (640x480),
MPG
Movie 4: Satellite Impacts Quicktime,
MPG