He was one of the Freaks and Geeks. He was the guy trying to forget Sarah Marshall. He wrote a Muppet movie. He was Marshall Eriksen on “How I Met Your Mother.” He even played David Foster Wallace. On this episode, I talk to actor, writer and novelist Jason Segel about his new novel exploring the dangers of virtual reality. We also talk about how the Harvey Weinstein scandal could change Hollywood for the long haul.