LOS ANGELES (AP) – “Oz” is still powerful. “Oz the Great and the Powerful” opens at number-one this weekend. Disney’s 3-D prequel to “The Wizard of Oz” takes in more than $80 million. There’s no Dorothy in this Oz — but there is a wizard, a yellow brick road and a trio of witches. James Franco is the wizard, while Mila Kunis, Michelle Williams and Rachel Weisz (WYS) play the witches. “Jack the Giant Slayer” drops to second. “Identity Thief” is third this weekend. “Dead Man Down” opens at number-four.