I've been watching TV on my 17" Macbook Pro for several years now. I download shows I miss or just have to see without commercial interruption, such as Lost. It's not a bad system but It makes my high definition LCD Sony flat screen TV sad. But with Apple TV, my big TV won't be lonely anymore and I can still watch TV the way I want to. With Apple TV, I can enjoy movies, my shows, music, and podcasts in my iTunes library, plus photos and movie trailers — wirelessly, from my Mac. Apple TV is now available with either a 40GB or 160GB hard drive.