I have just finished making home movies from my DV camcorder in a high quality MP4 format using iMovie 08. I have also converted video tape to a high quality (for video tape) MP4 format by using the EyeTV input. I did all of this by first importing raw video in a high quality DV or EyeTV format and then encoding it into MP4 using H.264. My question is this: What should I do with this initial raw video? It takes up 160 GB and is making it impossible to back up the rest of my hard drive. I really don't want to buy another 500 GB hard drive to store a bunch of raw video, but will I be sorry in the future? I am happy with the movies and don't think I will want to change it in the future, but is there some reason to keep the raw video?