I was thinking about this I could use it as an external drive and could use any size drive I wanted. Might not be as sealed as some, but it's the cheapest I've seen if you get one with no drive... I have a 60 gb laptop drive layin right here in front of me

All the reviews say one of the only drawbacks is that it's huge... but looking at this review it's not THAT much bigger then the 3g ipods..