HP's Personal Media Drive

While we certainly appreciate the gesture, and think their heart is in the right place, could somebody please explain to us the point behind HP's new Personal Media Drive? We get that it's a 160GB hard drive which pops into a special docking bay on a PC and can double as a regular portable USB 2.0 drive when removed, and we also understand why you'd want to make it easy for people to take their photos or videos or music with them to another computer. What we don't get is why you'd buy one of these rather than a generic external hard drive which serves exactly the same function, especially when considers that, at a retail price of $219, a Personal Media Drive costs at least fifty or sixty bucks more than a comparable drive from Maxtor or LaCie.