EXCLUSIVE: WME has signed Zuckerberg Media CEO and Start Ups: Silicon Valley executive producer Randi Zuckerberg in all areas. Zuckerberg, the sister of Facebook founder and CEO Mark Zuckerberg, is currently casting Start Ups: NYC and will continue to develop television programming that combines technology and pop culture. Zuckerberg Media’s two stage, 12,000-square-foot state-of-the-art production studio opened this month in Silicon Valley and will create and distribute live, digital-first content. Randi Zuckerberg also will continue her work with Cirque du Soleil on branded content.