In Hollywood, the industry’s very particular rules of math state that two attractive movie stars should result in at least a semblance of onscreen chemistry. It’s worked for all kinds of bizarre pairings, and it should have worked for Nicole Kidman and Zac Efron, teaming up in A Family Affair for the second time. Kidman is a skilled actor with incredible range and a willingness to take risks on potentially bad projects, and Efron is chiseled, talented and always game for ridiculous comedic scenes centered on self-ridicule.