What was the most significant moment in the history of Marshall and Ted's friendship on How I Met Your Mother?

Marshall and Ted's friendship on How I Met Your Mother is one of the most endearing relationships in the show. Throughout the series, they have many moments that cement their friendship, but the most significant moment has to be when Marshall's father passes away.

In season 6, episode 13, 'Bad News,' Marshall is waiting for a phone call from his father to find out the results of some medical tests. Throughout the episode, the number on a countdown clock is shown, slowly ticking down from 50. It's not until the very end of the episode that we learn the significance of the number: Marshall's father has passed away. The scene that follows is heart-wrenching, with Marshall in tears as Ted comforts him.

It's not just this scene that makes it the most significant moment in their friendship. Throughout the series, we see Ted consistently being there for Marshall, whether it's helping him through his breakup with Lily, comforting him when he loses his job, or even just sitting in silence with him when he needs it. Ted is always there for Marshall, and this moment solidifies their bond in a way that nothing else could.