I just picked up a new Flip Video and was dismayed to find out that it used a custom app to import its movies, and that this custom app was PPC. I was also dismayed to find out that iMovie ‘08 refuses to import AVIs even if you have the appropriate codec installed. So after some hacking, I put together an Automator workflow that will convert all your Flip videos into DV and import them into iMovie. You can download it here.
Update: I’ve put up a new version of the importer that has a much longer timeout when waiting for Quicktime to export each movie.