1. The characters of Ted, Marshall, and Lily are based on Rebecca, Thomas’s college sweetheart and wife, with Carter Bays and Craig Thomas, the creators of the series.
2. In the casting audition for ‘Barney,’ Neil Patrick Harris played the scene where Barney played the laser tag and knocked down the jury’s table with the crazy moves he made!
3. Megan Branman, the casting director of the series, saw Cobie Smulders in a drama that coincided with her randomly browsing channels and said, “Here, I found our Robin!” she said.
4. Thomas’s wife, Rebecca, said only Alyson Hannigan could justify his role.
5. Originally, Jim Parsons, Sheldon of the Big Bang Theory, was considered for the role of ‘Barney.’
6. Britney Spears called the show’s creators in person and said she wanted to be involved.
7. If the series had finished in the 1st or 2nd season, the screenwriters were planning to make Victoria a ‘mother’!
8. Many websites mentioned in the series is real!
9. The idea of a ‘slap bet’ between Marshall and Barney came from Carter Bays, who allegedly slapped friends in high school.
10. Maclaren’s pub, the only bar in our show, is named after Carl Maclaren, one of the executive assistants.
11. Thomas and Bays considered using two different actors for the ‘Ted Mosby’ character; Josh Radnor and Bob Saget.
12. The screenwriters of the series never thought to create the ‘Barney and Robin’ relationship at first, this idea came about when they saw the harmony between Neil Patrick Harris and Cobie Smulders.
13. One of the saddest episodes, the scene in which Marshall learns that his father has died, was filmed until the character’s actor Jason Segel did not know that his father in the series was going to die.
14. Elegant Jason Segel tried to quit smoking just because Alyson Hannigan was bothered by the smell.
15. ‘Robin Sparkles’ episode was the hardest to shoot. In these shots, Cobie Smulders had to dance for about 16 hours without stopping!
16. All the other people who played in the first scene where we saw ‘mom’ at the train station were actually from behind the scenes team!
17. Finally, the last scene for How I Met Your Mother was the scene where Ted met the ‘mom’ while waiting for the train in the rain!