Well, if you really want to get even pickier, when you watch the same signal broadcast on both an analog display next to a digital flat screen, one of them will be delayed by a couple of seconds. I play pool in a league two nights a week in a local sports bar and they have a mix of both analog CRT displays as well as digital flat screens. There's always a delay between the two types of displays, but I can't recall which one lags behind the other. The source of the signals is DirecTV. The only way to see something "live" is to be there in person. Anything that's broadcast is delayed slightly behind the actual event in real time, although it may seem imperceptable in most cases.