I've been reading these kinds of threads for a long time, as well as googling this issue. Everyone of the responses to this issue, are in denial of what the original question/problem is. I pay $1.99 for some TV shows I want to watch on my AppleTV, I do this from the AppleTV interface, works great. They download to the AppleTV's hard drive. There are quite a few AppleTV owners like me that DO NOT WANT content synced back to my computer. There are many reasons, space issues on the computers HD, and the time it takes to sync back. I UNDERSTAND the logic of the sync back, as there are probably more users that want to keep the content they bought. There was a time when an Apple computer owner/user was able to do WHAT THEY WANTED TO, and Apple gave us setting choices to do such. A setting with "warning" would be what users like me NEED. I have about 20 episodes of TV shows, that after I watch them, I would LOVE to DELETE them from the AppleTV, or at least have the CHOICE. As it stands as of 1-31-10, the design of the AppleTV/iTunes software does NOT allow for a choice in this particular case, as Apple has made the assumption, ALL content purchased should sync back to the whatever iTunes library the computer is synced to.
With me so far? So while I keep buying TV episodes on my AppleTV, they want to sync back to my computers hard drive. So far this issue has NOT been addressed by Apple, and I doubt it ever will be, meaning users like me and a small minority, have to LET the AppleTV sync back to the computers hard drive, and then delete it from there. For this very reason I have not "synced" from my iTunes library in a long time, so now I have over 20 gigs of TV shows, that I am FORCED to let copy back over my network to my computers hard drive, which is very time consuming, puts MORE hours on my hard drive spinning, etc. Only then can I delete the files from my HD.
Sure there are some dumb ways to NOT have the AppleTV in sync with the computers hard drive, but I still want the ability to stream from my iTunes library on my computer, and for it to SEE my playlists etc. But as soon as you try to SYNC, not matter what settings you choose for syncing, the purchased content that was bought and downloaded directly to the AppleTV from the network, begins to SYNC back to the computer hard drive, and you can't STOP this. AGAIN, I understand the default behavior of this, but it leaves a HUGE gap in the way some of us want to use their AppleTV's.
So as of 1-31-10 there is NO way to do what some of us want to do, and that is to STOP the sync back from an AppleTV to our computers hard drive, and NO way to delete content from the AppleTV, without doing a reset, and then upgrading to the current version, also time consuming and un-apple like as well. Well actually there is probably only one way. And that is the AppleTV hacks, I've done this on previous versions of the AppleTV software, I guess I'll have to find the latest BOXEE hack, so I can access MY appletv and it's contents, and delete it from there. Apple Corp. is once again forcing me to do extra work and HACK their device by not adding a simple preference choice.
AGAIN, not everyone would want or need to do want SOME of us want the choice to do, but consider this when answering or trying to help other that will ask this question time and time again. There are some valid reasons to wanting this choice of syncing options. As it stands now, if I don't do the Boxee hack, I'll have to allow the default behavior of syncing over 20 gigs of TV shows I've already watched and NO longer want to save, back to my computers hard drive, this will take hours, and then delete those files from the computers hard drive. Extra work, stress and hours on my hard drive as well as more hard drive deletions which are never good if you can avoid them.
I'm sending this message to AppleTV support as well, though I doubt they are going to change this and add a user choice option anyways. So for me, it looks like the Boxee hack is the only answer to UNLOCKING the AppleTV and allowing me to make my OWN CHOICES. All other current supposed "work around" do NOT address the underlying issue!