Who was the most memorable guest star on How I Met Your Mother?

How I Met Your Mother had many memorable guest stars throughout its nine-season run, including Britney Spears, Katy Perry, Jennifer Lopez, and many more. However, one guest star who stands out is Neil Patrick Harris's real-life husband, David Burtka.

Burtka made his first appearance on the show in the fourth season, playing Scooter, the former high school boyfriend of Lily (Alyson Hannigan). Burtka's character was a fan favorite, and he made several more appearances throughout the series. In fact, he even appeared in the show's final episode, helping to bring the story full circle.

Aside from Burtka, other notable guest stars on the show include Bryan Cranston, who played Ted's boss, Kyle MacLachlan, who played The Captain, and Wayne Brady, who played Barney's brother.

Overall, How I Met Your Mother was known for its impressive roster of guest stars, but David Burtka's recurring role as Scooter will always be remembered as one of the show's most memorable guest performances.

There were many memorable guest stars on How I Met Your Mother, but some of the most memorable include:

• Bryan Cranston as Hammond Druthers, Ted's overbearing boss. Cranston is best known for his role as Walter White in Breaking Bad, but he was also hilarious as the over-the-top Druthers.
• Bob Barker as Barney's father. Barker was a perfect choice to play Barney's father, as he had the same kind of over-the-top personality.
• Jennifer Lopez as Anita, a woman who Barney dates in season 2. Lopez was great in the role, and her chemistry with Neil Patrick Harris was off the charts.
• Britney Spears as Abby, Stella's receptionist. Spears was a surprise guest star, but she was hilarious in the role of the over-eager Abby.
• Will Forte as Marshall's brother, Marcus. Forte was perfect in the role of the goofy Marcus, and he had some great scenes with Jason Segel.
• Kyle MacLachlan as The Captain, the husband of one of Ted's dates. MacLachlan was great in the role of the creepy Captain, and he had some great scenes with Josh Radnor.

Ultimately, the most memorable guest star on How I Met Your Mother is a matter of personal opinion. However, many fans would agree that Bryan Cranston, Bob Barker, Jennifer Lopez, Britney Spears, Will Forte, and Kyle MacLachlan were some of the most memorable guest stars on the show.