One of the Apple TV's strengths is that it's based on Mac OS X. However, that's also proving to be a weakness as well. Consumer electronics boxes in the living room must live up to a higher quality standard than a Macintosh computer. After I installed iTunes 8, I noticed that the two TV shows I purchased on the Apple TV no longer synced back to my iTunes library.
The Needy, Clingy Apple TV
The Needy, Clingy Apple TV