Friends is by far one of the most famous shows ever to hit our televisions here are 25 of the guest stars who appeared on the show alonside Chandler, Monica, Ross, Rachel, Phoebe and Joey that you may or may not remember.
1. Emily Osment
You now know her from the Disney Channel Original TV series Hannah Montana and ABC's Young and Hungry but before her breakout roles Osment guest starred on Friends as a young trick or treater, Lelani Mayolanofavich.
2. Cole Sprouse
How can you forget Cole Sprouse as Ross's adorable son Ben Geller? Cole who played Ben, is now known for being on The Suite Life of Zack & Cody and The Suite Life on Deck, where he alongside his brother Dylan are the lead actors on the show.
3. Dakota Fanning
Dakota Fanning is famous for portraying Lucy in the 2001 drama I Am Sam but she also guest starred on Friends as Mackenzie, a 8-year-old girl that lives in the house Chandler and Monica buy.
4. Mae Whitman
Mae Whitman is now known for playing Amber Holt in the NBC, family drama Parenthood. Whitman guest starred on Friends as Sarah Tuttle, who was part of the Brown Birds selling cookies to people, in the episode Ross accidentally breaks her leg.
5. Freddie Prinze Jr
Most Popularly know for playing Fred in the Scooby-Doo live action movies and Zack Siler in She's All That, Freddie Prinze Jr also guest starred on Friends as Sandy, a male nanny for Emma.
6. Danny DeVito
Danny DeVito is a recognizable face, mainly due to the fact that he has acted in so many great movies. When guest starring on Friends, DeVito portrayed "Officer" Roy "Goodbody", a stripper.
7. Anna Faris
For the role of Erica in her 4 episode arc, Faris looked almost unrecognizable as her character was the young woman who gives birth to Chandler and Monica's twins.
8. Ellen Pompeo
Ellen Pompeo is now one of the most recognizable actressses on our television screens, playing Dr. Meredith Grey on ABC's hit show Grey's Anatomy. Pompeo portrayed Missy Goldberg, one of Ross and Chandler's old college crushes.
9. Christina Applegate
Christina Applegate guest starred as Rachel's sister, Amy Green, who visits Rachel twice, both times because of boyfriend problems.
10. Reese Witherspoon
Witherspoon is one of the well known actors in Hollywood, having won the Academy Award for Best Performance by an Actress in a Leading Role for her performance in Walk the Line in 2005. Witherspoon too guest starred as the other Green sister, Jill.
11. Ben Stiller
Stiller played Rachel's boyfriend and lets just say that he had an anger management issue.
12. Sean Penn
Sean Penn played the role of Eric, the ex-fiance of Ursula Buffay, who is Phoebe's twin sister.
13. Bruce Willis
Bruce Willis is a face we associate with action, due to his roles in movies like Looper, G.I. Joe: Retaliation and even Sin City: A Dame to Kill For. When he guest starred in Friends as Paul Stevens who was Elizabeth's father and disapproved of Ross for his daughter. He even had a short lived romance with Jennifer Aniston's character Rachel Green.
14. Julia Roberts
Julia Roberts guest starred on Friends as Susie Moss, the love interest for Matthew Perry's character Chandler. Roberts is most known for romantic movies such as Pretty Woman, Notting Hill, My Best Friend's Wedding and Runaway Bride.
15. Jennifer Coolidge
Jennifer Coolidge played Amanda Buffamonteezi, who was Monica and Phoebe's old roommate and before Chandler lived in the building.
16. Alec Baldwin
Baldwin played the role of Parker who was Phoebe's boyfriend for two episodes in Season 8. Parker was constantly energetic who was cheerful, talkative and looked on the bright side of any situation.
17. John Stamos
John Stamos played the role of Zack when he guest starred on Friends. Zack is a prospective sperm donor for Chandler and Monica as well as Chandler's work colleague.
18. George Clooney
George Clooney played Dr. Michael Mitchell, who was also a love interest of Rachel's.
19. Paul Rudd
Rudd played the role of Mike Hannigan, who was phoebe's love interest and eventually her husband on the show.
20. Brad Pitt
Brad Pitt played the role of Will Colbert, he went to the same high school as Ross, Monica and Rachel. In the episode he guest starred in "The One With The Rumor", Will comes to Monica and Chandler's for Thanksgiving.