Apple TV

Apple TV puts your iTunes library — movies, TV shows, music, and podcasts on your TV. And your digital photos appear in high definition, so you can put on a big-screen slideshow. With up to 200 hours of video, 36,000 songs, or 25,000 photos at your command, there’s always something good on TV.
With Apple TV, you can watch theatrical trailers from Apple.com on your TV. And now you can browse and watch YouTube videos on the big screen, too. Search through thousands of free YouTube videos streaming directly from the Internet. Just sit back and enjoy the show.
Apple TV connects to your TV via an HDMI port or component video and audio ports. Its built-in, superfast 802.11 Wi-fi wireless capability syncs your iTunes library from any Mac or PC in the house. Best of all, what’s on Apple TV stays in sync: Anytime you change your library in iTunes, it changes on Apple TV — wirelessly, automatically.
Say you’ve downloaded Cars from iTunes. Instead of watching it on your computer, wirelessly sync the flick to Apple TV. Then pull up a seat, put up your feet, and play your movie on TV. Give yourself a hand: You’ve just changed the way you watch digital media.

source : www.apple.com