In the past, I have received the packet from Nielson whereby I recorded what we watched and mailed it in after a week. That was a long time ago. But I can be watching "Imus in the Morning" now and they will discuss their ratings from earlier in the week or just a few days ago. The NY Times has a listing of all the top shows from the previous week ever week. They do it by network tv, cable channels, age group, etc. I just wondered how they could do it so quick if they were waiting on all those packets to come back. To me, the data would not be available until it was tabulated and not appear as quickly as it appears to be from what I read and see and hear on the tv. I always heard the term "Over Night Ratings" for the Super Bowl, Oscars, etc. Just wondering how its done.