Movie Review: Robbie Williams has always lived to entertain. In ‘Better Man,’ he’s still doing it

“I came out of the womb with jazz hands,” pop star Robbie Williams recounts in “Better Man,” his new biopic. “Which was very painful for my mum.” Badum Dum. But also: Wow. What an image, to illustrate a man who, we learn, agonized from early childhood as to...