With the How I Met Your Mother Season 9 finale scheduled for March 31, all main cast members appeared on The Late Show with David Letterman on Monday.
And - SPOILER ALERT!!! - they ran down a Top 10 List of the surprises you can expect to take place on the series-ender.
Note to MacLarens: Enjoy being a bar while you can! Watch now:
You can also watch How I Met Your Mother online at TV Fanatic and you can check out photos from the next all-new episode here:
1. Drowning Barney
No, Robin's not drowning Barney but she might like to considering how hungover he is on the morning of their wedding on How I Met Your Mother.
2. How Much Did Barney Drink?
Just how much did Barney drink the night before his wedding? "Rally" is the 18th episode of the show's ninth and final season.
3. Should Have Slowed Down
Perhaps Barney should have slowed down on the partying considering it's now the big day on How I Met Your Mother.
4. Barney's Hangover Fixer Elixir
Once upon a time, on a very bad morning, Barney offered Lily his famous Hangover Fixer Elixir.
5. The Ridiculous Recipe
Is there any chance that Lily can recall Barney's ridiculous recipe for a hangover cure to help rouse him for his own wedding?
6. Desperate Measures
Robin is willing to resort to desperate measures to get her groom ready for the wedding ceremony on How I Met Your Mother.
7. Hours to Go
With the wedding ceremony just hours away, things look desperate when Robin can't wake Barney. "Rally" is the 18th episode of the show's ninth and final season.
8. Rousing Barney
Will Lily and Robin be able to rouse Barney before it's time to walk down the aisle on How I Met Your Mother?
9. Watching Video?
Are they watching a video or taking selfies in this scene from How I Met Your Mother? At least they're all smiling.