Actor Jason Segel made his career in big studio comedies such as “Forgetting Susan Marshall," and then he had an ongoing role in the TV sitcom, “How I Met Your Mother.” But he changed his lighthearted image by starring as author David Foster Wallace in “The End of the Tour,” which won him a lot of acclaim. Now he's taking that new image into his latest movie, the sci-fi love story “The Discovery,” which co-stars Rooney Mara and Robert Redford.