This doesn't happen often, but every once in awhile, iTunes will loose its connection to my ATV in the devices list and I have to restart iTunes to get it back. This sometimes leads to the AppleTV having to re-establish my iTunes library and that can take a long time waiting for the "Loading Jason's iTunes Library" screen to finish up. Whenever that happens, the ATV must have lost its movie poster cache and needs to re-cache every single movie poster image from my iTunes Library. All of this is of course annoying and i'd like to prevent this from happening in the future. I was hoping there was a solution to fixing this. If not, is there at least some way to tell iTunes to rescan for devices so I don't have to restart it?