Jason Segel goes full-frontal in his comedy, Forgetting Sarah Marshall, and one unbelievable scene was inspired by a real-life heartbreak. Some of Hollywood‘s finest work is inspired by real-life experiences and for Jason Segel, he relived a painful breakup for the sake of entertainment. Unfortunately, the heartwrenching reenactment received zero nods during the 2008 award show season, but Forgetting Sarah Marshall remains a fan-favorite raunchy comedy. Jason Segel was dumped his girlfriend – butt naked Forgetting Sarah Marshall left a lasting impact on fans, and not just because of its R-rate…