8 Due to Jason Segel’s (Marshall) real-life smoking habit, he and his co-star and on-screen wife, Alyson Hannigan (Lily), rarely kissed on-screen because she disliked the taste and smell of smoke on Segel’s breath.

At Hannigan’s request, kisses between the two were infrequently scripted.

9 Neil Patrick Harris made $210,000 per episode, while his co-stars made $120,000 per episode.

10 Ted has dated at least 29 women who aren’t the mother.

11 Barney shows up without a suit only 18 times throughout the entire series.

12 Three of the main actors on the show have had their significant others in multiple episodes. 

Alyson Hannigan’s husband Alexis Denisof plays Sandy Rivers; Cobie Smulders’ husband Taran Killam plays Blauman; and David Burtka, Neil Patrick Harris’s husband, plays Scooter.

13 In the episode “Bad News,” the only number that does not appear onscreen as a numeral is the number 5. Instead, between the numbers 6 and 4, Barney and Marshall share a high five.

14 Jim Parsons, who stars in The Big Bang Theory as Sheldon, auditioned to play Barney Stinson.