Hide apps on the Apple TV - As the Apple TV gains new apps, some users may find that the device's home screen is getting a bit cluttered. For example, I don't care to watch sports on my Apple TV, and it'd be nice if I didn't have to see those apps.
David Chartier, writing on Finer Things in Tech, has pointed out an easy way to clean up excess apps. Go to Settings > General > Parental Controls, turn on Parental Controls if it's not already activated (you'll be asked to enter a 4-digit PIN), then scroll down and click on the apps you want to hide to toggle their visibility.
David also points out, in his article, how to move apps around on the Apple TV's home screen.