YouTube closed captioning

I decided to check to see how hard it would be to add closed captioning to a youtube(tm) file.  Turns out, it's not too hard.  You just need to have the correct tool for the job. On the mac, it's an application called Jubler.  Create then save the items you wish to have closed captioned, save the captions as a .sub file, then upload to YouTube.  Easy and it works.  (Check out http://www.youtube.com/watch?v=ChMOVlC6zy0 which is my first attempt to create a closed captioned movie.)