“Extra’s” Adam Glassman chatted with Julia Roberts and Ethan Hawke at the NYC premiere of “Leave the World Behind.” They spoke about how “effortless” it was working together as well as the scary premise of the story, which sees a cyber-attack take down the world as we know it. Julia, who is a big football fan, also reacted to all the Taylor Swift and Travis Kelce buzz! “Leave the World Behind” hits Netflix December 8.