I have to admit being pretty amazed that 1gb of data could fit on my recently arrived Sandisk memory stick duo pro for the PSP - it's absolutely tiny. Now that a 2gb stick is available, I started to wonder what the capacity limitations of this format were. Does anyone have any idea how far the capacity could potentially go. Will we be seeing 10gb sticks in the duo pro format ? 20gb ? Transferring movies to the PSP at high res eat memory ++ (e.g. When I transferred just the Star Wars movie alone from my DVD it took up about 700-800 mbs), so the more capacity the merrier ! Cheers, Dr. D.