Stanford 24, USC 23: I will concur with what others have said... this is probably the biggest upset in college football history. Until LSU loses to Louisiana Tech by four touchdowns next month, that is.
LSU 28, Florida 24: In my mind, the best college football game of the season so far. Les Miles, going five-for-five on fourth down? Huevos grandes, mi amigo.
South Carolina 38, Kentucky 23: Lee Corso once said, "I don't think Spurrier wins the SEC or National Title. I don't care if he coaches [at South Carolina] 400 years." And here's South Carolina, in the top ten with their only loss to the number one team in the nation. I guess that's why they pay Corso the big bucks.
Illinois 31, Wisconsin 26: I'd like to take this opportunity to personally thank Ron Zook... I don't think I could have taken two teams from the Big Ten in the top five of the polls for much longer.
Here's the reference for the last couple of images, plus a possible re-enactment of Ron Zook's own post-game celebration (hell, it worked for Larry Eustachy).