According to a tweet from a few minutes ago, since verified by our staff, there's an issue with Apple TV in the US at the current time. The TV shows menu, which is normally accompanied by the Movies, Music, Computers, and Settings menus, is AWOL. The first sign of this issue appeared in a series of tweets by @CraigGrannell:
Apple's System Status web page doesn't cover Apple TV, so there's no sign of the outage on the Apple site. We'll update this post as news becomes available.
UPDATE