How I Met Your Mother was known for alleviating heavy moments with comic relief, but the saddest scene in the entire series was rightly left humorless and utterly heartbreaking made even more so by the fact that it was improvised. While How I Met Your Mother had many tear-jerker scenes when the characters experienced deeply tragic moments, all of which were handled incredibly well by the sitcom’s cast. Theres no better example of this than with Marshall Eriksen actor Jason Segel, who improvised the saddest, most devastating moment in How I Met Your Mothers series.

https://screenrant.com/how-met-mother-marshall-dad-jason-segel-improvised/