Youtube is a great source of Japanese language material, especially for those who don't live in Japan, but the downside is the lack of portability - you have to watch the video online, which can be both inconvenient and distracting (ever tried to watch just ONE video clip on Youtube?) Open source to the rescue! Takuma Mori's vixy.net is an open source online service which allows you to convert Flash video (FLV files) into MPEG4 (AVI/MOV/MP4/MP3/3GP) so that you can save the file to your hard drive and transfer it to your iPod or phone. Now you can watch Good Learner, Bad Learner wherever you are!
PS (Keen beans can read Mori's vixy blog in Japanese)