I just installed a second hard drive in my 13" MBP. Here thread here. http://forums.macrumors.com/showthread.php?t=757885 With almost 1TB of onboard storage I plan to put all my movies and music on it. Here's how I plan to use it. Use Handbrake to convert all my DVDs to iPhone/iPod Touch format and load them all on the MBP. It should ba about 1.5gb per movie. This will allow me to freely add movies to my iPod Touch very quickly as I please. Rip all my CDs to 256kb (iTunes Plus) and manage in iTunes. This will allow me to have all my music on my 160gb iPod Classic. How would you use 1TB on your laptop?