Manny Pacquiao, Will Ferrell and More Duets We'd Like To See With Pacman

Boxer Manny Pacquiao appeared on Jimmy Kimmel Live! last night with comedian Will Ferrell. The pair sang a rousing duet version of John Lennon's "Imagine."

Pacquiao's not just the best pound-for-pound fighter in the world right now; he's also a successful pop singer in Asia. In his native Philippines, Pacman has released a record that has had immense commercial success.

The success of Pacman's duet with Ferrell got us to thinking about other potential duet combinations. These are the 20 best potential duet combos with Manny for the next time he wants to sing.

20. Will Ferrell

We know these two have fantastic chemistry as a duet; I mean, just look at them! Chemistry is such a huge part of any singing duo that these two could be one of the biggest acts in the country if they went on tour.

19. Mark Madsen

Ignore Shaq for now; his time is coming. Madsen doesn't sing, but look at those moves! He'd make a heck of a backup dancer for Pacman's next music video, don't you think?

18. Jackie Chan

Chan is actually a classically trained vocalist who has done numerous albums in his native China, almost all of which met with considerable commercial and critical success.

If he teamed up with Pacquiao, they could rule the Asian music market.

17. Cristiano Ronaldo

Who cares if he can sing? Any good musical act needs a guy who attracts the obnoxious preteen screaming girls, and Ronaldo can definitely do that.

16. Jo-Wilfried Tsonga, Andy Murray and Robin Soderling

This one wouldn't be a duet. Instead, they would combine to create the greatest boy band known to humankind.

15. Greg Oden

On second thought, this is a terrible idea. Oden would blow out his knee walking out on stage and be out for the rest of the tour, to be replaced by Joel Przybilla.

14. Gwyneth Paltrow

Paltrow's actually an excellent singer, on top of being a good actress. She's trying to get a country music career off the ground, and what better way to do that than to team up with Manny?

13. David Hasselhoff

Yes. How could this possibly go wrong?

12. Barry Zito

Between Pacman's dulcet pipes and Zito's sweet guitar skills, these two are an indie band waiting to happen.

11. Joaquin Phoenix

Sure it was an act, but still. Who wouldn't go see this concert?

10. Oscar De La Hoya

This would be the greatest boxing/singing duet of all time. If you booed them, they'd knock you out.

9. Danilo Gallinari

Can you say "Grammy?" Neither can Danilo.

8. Mark Wahlberg

Mark Wahlberg doesn't like to talk about his rap career, but if anyone could convince Marky Mark to relive his glory days with the Funky Bunch, it's the Pacman.

7. Kris Versteeg

Versteeg is a hockey player with the Toronto Maple Leafs. In his spare time, he dresses up like a cowboy and sings karaoke. Sounds like he and the Pacman need to get together and jam.

6. Bruce Willis

Bruce Willis isn't the worst singer on this list, but he's no Jackie Chan either. With Willis jamming on the mouth harp and Pacman belting out the vocals, what could go wrong?

5. Jeremy Roenick

Roenick is a former hockey player who, in case you couldn't tell from this video clip, has the funk deep down in his soul—I mean so deep that he can't even find it. He and Pacquiao could beat the snot out of critics who don't like their sound.

4. Mike Tyson and Wayne Brady

You remember Tyson's singing chops from The Hangover, right? Well, it turns out his lip-synching skills are just as good! Plus, who would tell Pacman and Tyson they couldn't sing?

3. Shaq

Three words for you: Pac. And. Shaq. I would buy that album in a nanosecond.

2. Matt Cassel

If Cassel and Pacman joined forces with Zito, they would be an epic boy band. And I mean epic.

1. Carl Lewis

This would be a terrible idea, to be honest. But Pacquiao would knock Lewis out three bars into whatever song they decided to sing—and then we'd all win.