Try XBMC Media Center for Apple. It’s a media center you can navigate with the Apple remote very easily, pretty too. Install Perian on your ATV. Using FTP, access AppleTV.local create a directory of your liking. FTP your movies in there, with Perian, you can even use high-res *.mkv In the XBMC settings, add the directory to your “Sources”. Woops, all you need to do in the future is FTP your movies to that directory. This is a screenshot of the menu.