"The Greatest Showman" is a nearly all-singing, all-dancing, old-fashioned movie musical. The Oscar-winning ("City Of Stars") song-lyricist team of "La La Land," Benj Pasek and Justin Paul, are Oscar-nominated for their original song, "This Is Me," from "The Greatest Showman." It's best to set aside that the movie is based on the life of P.T. Barnum, and enjoy the wonderful performance by Hugh Jackman, a showman in his own right (Oscar nominee, actor, "Les Misérables"). Fine in supporting roles are Zac Efron, Michelle Williams, and Rebecca Ferguson.