Chatting over a chaotic video call as he gets hair and makeup and films a new documentary, ‘American Idol’ and ‘The X Factor’ alum Simon Cowell tells ET’s Nischelle Turner how his 11-year-old son, Eric, and managing One Direction inspired his new show, ‘Simon Cowell: The Next Act,’ streaming Dec. 10 on Netflix. The show sees 16 boy bands compete for a spot to be managed by Cowell.