Dock: Bottom, no question. Though I haven't been in X much due to its totally lackluster software library (and don't even think of mentioning "Classic" to me with a straight face. In a real production environment, Classic has way too many flaws.), so I may change my opinion about position when X gets the apps I need.
iPod: At best, it's an OK product. Nobody NEEDS this product. From a pure technical perspective, any variety of MP3 players wil do just fine and be much cheaper. As for the harddrive duality, money could be better spent for a much larger drive that is also much cheaper. Granted, Apple has both of those things wrapped into one tiny package and that's all well and good, but again, who NEEDS this? Even at half the price, I have no use for it. Other people are obviously into the whole MP3 thing, so there must be some audience for it. I guess I just never listen to MP3s on the run, I'm either in the car or at home, so to me it's useless.
I predict the same fate as the Cube.