As I look at the excellent design of the PowerBook, and think about how it could be made better some day (not just with a snazzy G5 CPU), I continue to question why Apple does not build a PowerBook that comes without a built-in optical drive. Seriously, folks, I use the optical drive in my PowerBook probably once per 3 months. I used it a lot in the beginning to import music into iTunes and to install some software. Since the initial install I rarely use the regular drive. An optical drive is an expensive unit on a laptop (both in terms of volume, battery consumption, and weight) and I've seen numerous Centrino laptops that weigh around 3 pounds but no optical drive on-board. Sure, include a USB optical drive with the unit, but there should definitely be some model (in particular, the 12") that comes without a built-in one. I would imagine you could reduce its weight by slight under a pound but also reduce volume of the unit and possibly save some energy. Maybe we'll get this with a G5 PowerBook some day?