Fans of offbeat live-action police procedural sitcom Brooklyn Nine-Nine can rejoice, as it's been confirmed that there's a seventh season in the works. After the series was canceled by Fox after five seasons, many feared it would be the end of the show, but NBC immediately stepped in, releasing a sixth series earlier this year, followed by confirming a seventh series starting tonight.

But as we look back on what makes this hit show so great, the incredible cast of offbeat characters is surely high up there. And over the years, so many famous faces have starred alongside the show's regulars, you'd be forgiven for having forgotten about them. But don't fear. We've got the conclusive list of Brooklyn Nine-Nine guest stars, for your scrolling pleasure.

And there's one final huge star Andy Samberg is determined to add to the list - and he's not afraid to beg!

First hitting our screens in 2013, Brooklyn Nine-Nine quickly gained a cult following.

It tells the story of a younger, less experienced cop finding his feet in Brooklyn's 99th district, alongside a team of memorable characters.

There are many reasons for the show's loyal fanship.

The writing on the show is often praised for being highly hilarious - plus the stars of the show often exhibit excellent comic timing.

Which isn't to say it's been without its issues.

In fact, the series was canceled by Fox after five seasons, citing low viewing figures. Luckily for fans, it was quickly picked up by NBC, where it's undergone something of a renaissance.

But there's one thing fans of the show might not realize.

Over the years, some incredibly famous faces have enjoyed cameos in Brooklyn Nine-Nine - and with such a quick turnover, it's often something of a blink and you'll miss them. So here's a definitive reminder of every single one of them.

1. Fred Armisen

via: IMDB

In the very first episode, way back in 2013, Armisen plays a character called Mlepnos, who lives in a neighboring apartment to a recent murder scene.

2. Pete Davidson

The now-mega star plays an at-risk kid named Steven way back in season one of the show, who's forced to attend a junior police program.

3. Niecy Nash

via: IMDB

In season three, Clean House host Nash guest-starred in the series as Holt's melodramatic younger sister, Debbie.

4. Nasim Pedrad

via: IMDB

SNL cast member Pedrad played Jake's half-sister (and casual con artist) Katie Peralta in season five.

5. Patton Oswalt

via: IMDB

The comedian and actor best known for starring in King of Queens played FDNY Fire Marshal Boone for two episodes of the show in season one.

6. Bill Hader

Captain Holt is briefly replaced by Captain Seth Dozerman, played by Hader - although he only lasts for one episode.

7. Jenny Slate

via: NBC

Jenny Slate, who's also starred in Girls and indie movie Obvious Child, played loyal mafia mistress Bianca.

8. Kid Cudi

via: IMDB

The rapper and producer plays a wrongfully arrested convict called Dustin Whitman in season one.

9. Nick Kroll

via: NBC

The hilarious comic played a Homeland Security agent in charge of a counter-terrorism drill named Kendrick back in the show's second season.

10. Adam Sandler

Sandler had a cameo role as himself in the first season, interrupting the auction and being generally obnoxious.

11. Eva Longoria

via: NBC

Desperate Housewives star Eva Longoria played Sophia Perez, a defense attorney, and brief love interest for Jake, on the show's second season.

12. Kan Marino

via: IMDB

Star of Wet Hot American Summer and web series Burning Love, Marino played another short-lived replacement for Holt, Captain Jason "C.J." Stentley, in season four.

13. Jorma Taccone

via: IMDB

Taccone, who starred in Lonely Island alongside Brooklyn Nine-Nine star Andy Samberg, plays Fun Zone manager Taylor in series four.

14. Maya Rudolph

via: IMDB

During Holt's stint in Witness Protection, Rudolph steps in as US Marshall Karen Haas in season four.

15. Nick Offerman

via: NBC

Offerman, best known for his role as Ron Swanson in Parks and Recreation, plays Frederick, a vengeful ex-boyfriend of Holt.

16. Sterling K. Brown

via: IMDB

In 2018, Brown played a dentist called Phillip Davidson who was brought in for questioning regarding a murder.

17. Kathryn Hahn

via: NBC

Hanh, famous for television roles in Transparent and movies like Bad Moms, played Eleanor Horstweil, the angry ex-wife of Charles.

18. Danny Trejo

via: NBC

Trejo is famous for playing the villain in a huge number of action movies. He played Rosa's father, named Oscar Diaz.

19. Jimmy Smits

via: NBC

This Emmy award-winning actor is best known for his role in L.A. Law. He played Victor Santiago, Amy's dad, in Brooklyn Nine Nine's fourth season.

20. Chris Parnell

via: NBC

The Saturday Night Live and 30 Rock star played Sophia's boss Geoffrey Hoytsman.

21. Jim O'Heir

via: IMDB

Best known as the unfortunate Gerry on Parks and Recreation, O'Heir played a deeply prejudiced and problematic Florida cop called Sheriff Reynolds.

22. Dennis Haysbert

via: NBC

Haysbert may be best known for starring in those Allstate commercials, but he played collaborative FBI agent Bob Anderson who worked with the Brooklyn Nine-Nine, too.

23. Stephen Root

via: NBC

He's perhaps most instantly recognizable for his role in Dodgeball, but Root made an appearance as Charles's dad back in series two.

24. Bradley Whitford

via: IMDB

The Get Out actor made a cameo in Brooklyn Nine-Nine as Jake's dad, Roger Peralta, in seasons two and three.

25. Katey Sagal

via: NBC

The other half of Jake's parents? His mom, Karen Peralta, was played by the Sons of Anarchy actress.

26. Nathan Fillion

via: IMDB

The actor who's best known for his role in Firefly played an actor called Mark Deveraux in the show's fourth season.

27. Gina Gershon

via: IMDB

The actress, who's starred in classic movies like Face/Off and Showgirls, played Lieutenant Melanie Hawkins, a corrupt NYPD officer who causes havoc.

28. Matt Walsh

via: IMDB

The Veep actor plays weekend detective at the Nine-Nine, Lohank, and has cameos in seasons two, three, and four.

29. Zooey Deschanel

via: IMDB

The New Girl star plays the same character, Jess, in a crossover episode with Brooklyn Nine-Nine in season four.

30. Garret Dillahunt

via: NBC

The Burn Notice and Raising Hope actor played a ninety-third precinct cop (and personal idol of Jake's) named Dave Major.

31. Tim Meadows

via: NBC

The Mean Girls principal appears as Caleb, Jake's season five cellmate who's in prison for cannibalism.

32. Andy Richter

via: NBC

The actor who's best known as Conan's sidekick played an angry doorman.

33. Blake Anderson

via: NBC

The Workaholics star and musician played Constantine Kane, one of Amy's exes.

34. Ryan Phillippe

via: NBC

Best known for being a nineties teen heartthrob, Phillippe plays Milton Boyle, Charles's cousin and the father of Gina's daughter.

35. Nick Cannon

via: NBC

The actor and musician plays Marcus, nephew to Captain Holt, who has a romance with Rosa.

36. Craig Robinson

via: IMDB

Perhaps best known for his role as Darryl on The Office, Robinson plays master criminal Doug Judy, and has been in every single season at least once.

37. Ed Helms

via: NBC

Another star of The Office (who you may also recognize from The Hangover), Helms played obnoxious United States Postal Inspection Service agent Jack Danger in season two.

38. Kyra Sedgwick

via: NBC

The Closer star plays Captain Holt's rival Madeline Wuntch in seasons two and three.

39. Jason Mantzoukas

via: NBC

The comedic actor had a recurring role as a love interest of Rosa's name Adrian Pimento. Their on-again, off-again relationship comes to an end in season five.

40. Gina Rodriguez

via: NBC

Best known for her titular role in Jane the Virgin, Rodriguez plays potential Rose love-interest Alicia - and could potentially make a return.

41. Damon Wayans Jr.

via: NBC

He plays ninety-eighth precinct cop Detective Stevie Schillens, who used to be Jake's partner and BFF.

But there's one cameo fans are still desperate for.

Bruce Willis, of course! If you're a fan of the show, you'll understand exactly why people are so keen to see the star make an appearance.

The dream has been long held by Samberg.

In 2014, he appeared on Entertainment Tonight, saying, "Hey Bruce - look, my character Jake Peralta on the show Brooklyn Nine-Nine, which is moderately successful, is obsessed with Die Hard and thinks that your character John McClane is the coolest character in the history of cinema."

"I, Andy Samberg, I'm a comedian, also feel that way."

"If you'd come be on the show, even if it's for one sentence, like a cool cameo, like we bump on each other on the street and you go, 'Excuse me,' and then walk away. If you had it in your schedule to breeze by just for one shot, I think it would mean a lot to the show, to the fan base."

The fans agree!

via: change.org

There's even a change.org petition to make Willis take notice!

And even though the final series is airing...

It's clear Samberg isn't willing to let the dream die. Just check out his latest plea! Fancy more info from the show? Scroll on for all the details on the final series ...