The biggest surprise: watching video on the tiny, 2.5-inch screen (320 by 240 pixels) is completely immersive. Three unexpected factors are at work. First, the picture itself is sharp and vivid, with crisp action that never smears; the screen is noticeably brighter than on previous iPods. Second, because the audio is piped directly into your ear sockets, it has much higher fidelity and presence than most peoples TV sets. Finally, remember that a 2.5-inch screen a foot from your face fills as much of your vision as a much larger screen thats across the room.