The best part of Gameday was when Kirk first came out to the set, which led Husker Nation to collectively BOO! him. A few seconds later, some students started a "JUST SAY SORRY!" chant that everyone started to shout. It was hilarious!
About the whale sign, the best part was that the students were able to pass around the sign for quite a while before security could take it away. We would see the sign for a second, everyone would laugh, and then the sign would discretely get passed down the line until you saw it held up again, but in a completely different section of the crowd. Security kept trying to chase after the sign, but were a step behind before they finally got it.
The OJ sign was not held up until the end of the show, as I'm sure that the maker of the sign decided to keep the sign hidden until the end so that it would not get taken away. Hilarious sign, though.
I have pictures of these signs...I'll try to post them later.