sweet 16. jeff fischel is here. three marquee teams play tonight? >> duke, connecticut and florida, they've all won two titles in the last 12 years. fans are fired up to see them. but we're also keeping an eye on one of the cinderellas. you know the giant killer, butler university, last year they made it to the championship game, came oh, so close. it looks like the bulldogs have their magic working again. matt howard scored at the buzzer against old dominion right there to win. and then their next game against pitt, one of the craziest final few seconds you'll ever see to beat the number one seed. howard free throw with less than one second left was the difference. tonight, the bulldogs face wisconsin. now, the biggest star in the tourney has to be all-american jimmer freddette. his byu cougars take on florida tonight. fans are starting to make 2012 signs. a song is even devoted to him, and it's huge on youtube. ♪ you're old man crushing