Pitbull and Chris Brown brought some “Fun” to Wednesday’s “American Idol” finale with an electrifying performance. Looking sharp in a YSL suit, open-chested shirt, and shades, Breezy wowed with his slick choreography before a dapper Mr. 305 slid across the stage with a pack of sexy ladies. They made way for “Idol” contestant Qaasim Middleton, who busted out his own moves.