On 4chan's anime board, there's a thread about somthing that aired recently about the 100 greatest anime. I don't know ANYTHING about the program other than "it happend, here's a few hightlights." Very vague.
It seems that One Piece came in fourth after Gundam (not sure if it's the whole liscense, or the original), Dragon Ball, and Doraemon.
Sorry for the spotty information, but maybe someone else knows what's up, or where to go to find out. It's a start!