What do you get when one extremely cool teen TV star (Zendaya) and a too swole former teen heartthrob (Zac Efron) meet up under the Big Top? No, not the fourth High School Musical installment we deserve — it’s Hugh Jackman’s circus! The Greatest Showman, Jackman’s long-gestating P.T. Barnum biopic, has a new trailer. Michelle Williams stars as Barnum’s wife, Rebecca Ferguson is a Swedish opera singer, Hugh Jackman sorta raps, and Zendaya and Zac are lovebirds. Who-AH! This is The Greatest Showman, arriving in theaters this Christmas.