Ok, I am about to buy a Apple TV and I have a rather large library of about 600 plus DVD's and would like to place as many as I can on the Apple TV system setup. I plan to buy the 160 GB version but was wondering if it really matters if I buy the 160GB or the 40GB version as neither will allow me to put even half my movies on the drive. I guess I plan to put them on a external HD and use thru firewire, using the function( holding down Option while copying into itunes) so that I can use a external HD. So when I use the Apple TV then I just need to make sure that my External drive is turned on. I plan to get either a 500 GB or 1 TB for the external drive. Whatever will hold most of my movies. So my question that I need your opinion on it this: Does it really matter if I buy a 40 GB ATV, or a 160 GB ATV if I plan to use a External HD anyway? Part II to the question: What size would you think I would need for the external HD 500GB or 1 TB to hold 600+ DVD's? Thanks in advance.