Rbstehno, thanks suggesting the Seagate. I was interested in the Free Agent 2 TB HD, but there seems to be a problem with Free Agent drives and Macs. Specifically, there is an Amazon review by a guy who bought this drive for his Mac. Here is A. Leong's review on May 31, 2010:
"Do not buy this drive if you use sleep/ hibernate on your mac. I bought two of these to house my media library and to serve as a backup drive for my Mac Mini in my living room. First the positives: this drive is fast. I didn't have any problems with delay when I accessed data on the drive (iTunes library, movies, pictures). It's also quiet. It's fanless so no distraction when listening to music. The light on the bottom is anoying, but tollerable. Now for the big problem: if the drive goes into hibernate, it will not wake up, freezing you computer and forcing a hard reboot. With the updated firmware from Seagate, it takes about 15 min on inactivity. I used an applet to constantly ping it so that it wouldn't sleep. That was fine except if your mac goes to sleep, it will also hiberate this drive. Somehow, the time machine drive would still sleep everyday and freeze the mini, as a result. So, in short, if you're the kind of user who boots up your computer, does what you need to do, and then shuts it down, these are the drives for you. If you leave your computer on for any period of time, don't buy these."
http://www.amazon.com/Seagate-FreeAgent-FireWire-External-ST320005FJA105-RK/product-reviews/B002DW94WS/ref=cm_cr_pr_recent?ie=UTF8&showViewpoints=0&sortBy=bySubmissionDateDescending
Have you had any problem like this?