Man, you just got slapped! This emotional music video is an all-timer.

Marshall had the best night ever in 2009. And he and decided to sing a song about it.

Robin Sparkles is back! This time for the timeless track "Sandcastles in the Sand."

Easily the most serious of all How I Met Your Mother music selection. The Mother can seriously play that ukulele.

Nothing fits Barney like a suit. He sang about that on Episode 100.

From way back in How I Met Your Mother Season 2, the ultimate Robin Sparkles single. It will be stuck in your head for days.

Really, we should refer to this footage as Barney’s HOLIDAY compilation. It does include a take on The Dreidel Song, for example.

A preview clip of Speidi (Spencer Pratt and Heidi Montag) appearing on How I Met Your Mother on the magazine cover of "Them Weekly" that Marshall takes home to read while in the bathroom.

In this great clip from "Little Minnesota," Robin steals Marshall's story in order to impress the people at a local Minnesota bar. She doesn't even replace the word son with daughter.

Looking for scoop on the How I Met Your Mother finale? Let's hear from Alyson Hannigan!

Cristin Milioti has come on board the final season of How I Met Your Mother. She talks about the role here.