Ben Stiller not returning to direct 'Severance' Season 3

Ben Stiller won't direct on 'Severance' Season 3. But he's got plenty else to do

With a hit TV series, a documentary about his parents, a WWII movie and 'Focker-in-Law' in the pipeline, Stiller, near 60, isn't slowing down: 'You only have so much time.'