With the new Apple TV (2010) -- see our review -- Apple has done away with syncing and pin codes and everything else that complicated the process and now simply requires everything to use Home Sharing. So how does that work?
The Home Sharing feature in the iTunes 10 Advanced menu lets you easily share your iTunes media libraries among up to five computers in your household and, along with the new Apple TV, spread around the locations where you can view the movies and TV shows they contain. Turn on Home Sharing on each computer, using the same Apple ID for each one. You can then easily copy library contents from one computer to another (just drag and drop in your iTunes source column) so each person can have what they want on the computer they use when they sync their iPhone, iPad, and iPod touch. And everyone on the home network can immediately stream the contents from any of the libraries in the computers that are turned on in order to watch and listen. Also, you can extend this ability to your big screen via the new Apple TV. Just turn on Home Sharing in the Apple TV's Settings menu and enter the same iTunes Account information you used for Home Sharing on the computers. You can then stream the contents of any of the available libraries when you want to watch on that screen.
I'm currently streaming from both a desktop and a laptop to my Apple TV and it's working terrifically. Content is just there, I hit a button and it starts to stream immediately. Unlike the old Apple TV, where there was incredible lag or even the inability to elegantly fast forward, rewind, or skip through streaming content, this new iOS device handles it like a champ.
If you've tried it out yet, let us know what you think. If you need help getting started, check out our new Apple TV Forum.