Having that much space would allow you to store your movie collection on your computer. A software/game developer would be able to keep past projects of graphics intense games that use up 5+ GB of space for each project without filling up the HD... I only have 2GB of music on my computer right now, but if I had that much space I'd have something like 50GB of music! I would definitely use it up eventually... It would take a long time though. Wow, I'd love to have a terabyte of HD space!