Virtualdub is the free swiss-army-knife utility for Windows users that offers tons of features and plugins. One of the latest plugins for the app is Deshaker, an image stabilization filter that also offers controls to deal with common CMOS rolling shutter artifacts. There’s a great review of the plugin over at Outside Hollywood, and I highly recommend that you read the FAQ/notes at the plugin author’s website. CMOS camera shooters, pay attention to the “Camcorder has a rolling shutter” section on how to best configure settings. As a Mac user, I’m sad to note that Virtualdub is Windows only.