With the recent addition on an HDMI compatible receiver and new plasma TV, I am looking to pick up an Apple TV. I currently have two macs, an intel iMac and a G4 powerbook. I don't have as much drive space as I once thought I had with the 250 gig iMac and the 80 gig Powerbook. Both are backed up to a partioned 500 gig external HD. Part of the reason for getting the Apple TV is to provide a third location to back up my music and photos but I am considering getting a larger external HD to support more storage. Question time. Would it be best to connect the external HD to the Apple TV? Then both my mac's could access it over the network? If I was to get a larger external drive would I be able to stream from that drive to the Apple TV or do you need to download to the Apple TV drive first before you listen to or view a file? Basically I am trying to centrally locate the lionshare of my files with all my AV equipment (my router and modem are already in the same rack as my receiver etc). I would like to turn my macs into peripheral devices that access the files etc remotely but aren't the main storage location for my photos and music. Is this wise or even possible? Thanks!