Have you ever found a playlist on youtube and you wanted to download it but you do not feel like copying the videos 1 link at a time. That is where i were when i coded this utility script to do that for me. You basically just give it a list of videos and it downloads them all for you one after the other. IT IS JUST AWESOME!!!
PS. If you want to generate the list automatically, we have the youtube playlist scraper that does the job.