There were some good ones in 2010. Huge photo of Cam Newton ringing the cowbell on his visit was entertaining to see. But I got a chuckle from the ESPN spot we had before the Florida game where a guy was walking around with a "Tim Tebow's Mom is a MILF" sign.
"Cam Newton stole my other sign." <-- Couldn't find pic, sorry.
Edit: Around '07 I think Auburn beat Florida on the plains. Some of my good friends were at the game and had a sign that said "Tim Teblows our [Brandon] Cox". If I can get him to send it to me then I will post it.