Nickelodeon orders a third season of the hit live-action comedy "Big Time Rush." The series, produced in partnership with Sony Music, chronicles the adventures and misadventures of four best friends who move to Los Angeles and trade in their hockey sticks for a chance at music stardom. Nickelodeon will premiere the music video for Big Time Rush's new single "Worldwide," off the group's debut album BTR June 18. Year-to-date, Nickelodeon says "Big Time Rush" ranks as the No. 1 series with 6-11s and the No. 11 live-action series with 2-11s on all TV.