Keep ahead of your fellow Friends fans by committing these little known facts to memory:

1. Original names for the show included “Once Upon a Time in the West Village”, “Across the Hall”, and “Friends Like Us” before deciding on “Friends”.

2. Original storylines focused around only six of the friends – Monica, Ross, Rachel, and Joey. Producers were so pleased with the performances of Phoebe and Chandler that they added them more prominently to the show.

3. In the first couple of episodes Chandler and Joey’s apartment number was #4 and Monica and Rachel’s apartment number was #5. However, in the later episodes, they are 19 and 20 respectively because the producers noted that 4 and 5 corresponded to apartments on lower floors and the Friends’ apartments were higher up the building.

4. Courteney Cox was originally asked to play Rachel, but she asked to play Monica instead after reading the parts.

5. None of the scenes in Friends were ever shot in New York.

The first season was shot on Stage 5 at Warner Bros. Studios in Burbank, California. The NBC executives had worried that the coffee house setting was too hip and asked for the series to be set in a diner, but eventually consented to the coffee house concept. The opening title sequence was filmed in a fountain at the Warner Bros. Ranch at 4:00 am, while it was particularly cold for a Burbank morning. At the beginning of the second season, production moved to the larger Stage 24, which was renamed “The Friends Stage” after the series finale. Filming for the series began in the summer of 1994 in front of a live audience, who were given a summary of the series to familiarize themselves with the six main characters; a hired comedian entertained the studio audience between takes. Each 22-minute episode took six hours to film—twice the length of most sitcom tapings—mainly due to the several retakes and rewrites of the script.

Although the producers always wanted to find the right stories to take advantage of being on location, Friends was never shot in New York. Bright felt that filming outside the studio made episodes less funny, even when shooting on the lot outside, and that the live audience was an integral part of the series.When the series was criticized for incorrectly depicting New York, with the financially struggling group of friends being able to afford huge apartments, Bright noted that the set had to be big enough for the cameras, lighting, and “for the audience to be able to see what’s going on”; the apartments also needed to provide a place for the actors to execute the funny scripts.The fourth season finale was shot on location in London because the producers were aware of the series’ large following in the UK. The scenes were shot in a studio with three audiences of 500 each, the show’s largest audiences throughout its run. The fifth season finale, set in Las Vegas, was filmed at Warner Bros. Studios, although Bright encountered people who thought it was filmed on location.

Chicago Sun-Times’ Ginny Holbert found Joey and Rachel’s characteristics to be underdeveloped, while Richmond commended the cast as a “likeable, youth ensemble” with “good chemistry” Robert Bianco of USA Today was complimentary of Schwimmer, calling him “terrific”. He also praised the female leads, but was concerned that Perry’s role as Chandler was “undefined” and that LeBlanc was “relying too much on the same brain-dead stud routine that was already tired the last two times he tried it”. The authors of Friends Like Us: The Unofficial Guide to Friends thought that the cast was “trying just a little too hard”, in particular Perry and Schwimmer.

As the series progressed, reviews became more positive, and Friends became one of the most popular sitcoms of its time. Critics commended the series for its consistently sharp writing and the chemistry between the main actors. Noel Holston of Newsday, who had dismissed the pilot as a “so-so Seinfeld wannabe” in 1994, reneged his review after rewatching the episode, and felt like writing an apology to the writers. Heather Havrilesky of Salon.com thought that the series “hit its stride” in the second season. Havrilesky found the character-specific jokes and situations “could reliably make you laugh out loud a few times each episode”, and the quality of writing allowed the stories to be “original and innovative”. Bill Carter of The New York Times called the eighth season a “truly stunning comeback”. Carter found that by “generating new hot story lines and high-decibel laughs”, the series made its way “back into the hearts of its fans”. However, Liane Bonin of Entertainment Weekly felt that the direction of the ninth season was a “disappointing buzzkill”, criticizing it for the non-stop celebrity guest spots and going into jump the shark territory. Although disappointed with the season, Bonin noted that “the writing [was] still sharp”. Havrilesky thought that the tenth season was “alarmingly awful, far worse than you would ever imagine a show that was once so good could be.” Friends was featured on Time’s list of “The 100 Best TV Shows of All-Time”, saying, “the well-hidden secret of this show was that it called itself Friends, and was really about family.

“It may have been impossible for any one episode to live up to the hype and expectations built up around the Friends finale, but this hour probably came as close as fans could have reasonably hoped. Ultimately, the two-hour package did exactly what it was supposed to do. It wrapped up the story while reminding us why we liked the show and will miss it.”
— Robert Bianco of USA Today on the series finale.
Reviews of the series finale were mixed to positive. USA Today’s Robert Bianco described the finale as entertaining and satisfying, and praised it for deftly mixing emotion and humor while showcasing each of the stars. Sarah Rodman of the Boston Herald praised Aniston and Schwimmer for their acting, but felt that their characters’ reunion was “a bit too neat, even if it was what most of the show’s legions of fans wanted.” Roger Catlin of The Hartford Courant felt that newcomers to the series would be “surprised at how laughless the affair could be, and how nearly every strained gag depends on the sheer stupidity of its characters.” Ken Parish Perkins, writing for Fort Worth Star-Telegram, pointed out that the finale was “more touching than comical, more satisfying in terms of closure than knee-slappingly funny.”

Aniston’s hairstyle was nicknamed “The Rachel”, and copied around the world. Joey’s catchphrase, “How you doin’?”, has become a popular part of Western English slang, often used as a pick-up line or when greeting friends.

The series has also impacted on the English language, according to a study by a linguistics professor at the University of Toronto. The professor found that the characters used so as an adjective more often than other intensifiers, such as very and really.

The professor believed that although the preference had already made its way into the American vernacular, usage on the series may have accelerate the change. Following the 9/11 terrorist attacks in the United States, ratings increased 17% over the previous season as viewers tuned in for comfort.

The Central Perk coffee house, one of the principal settings of the series, has inspired various imitations worldwide. In 2006, Iranian businessman Mojtaba Asadian started a Central Perk franchise, registering the name in 32 countries. The decor of the coffee houses are inspired by the one in Friends, featuring replica couches, counters, neon signage and bricks.

The coffee houses also contain paintings of the various characters from the series, and televisions playing Friends’ episodes. James Michael Tyler, who plays the Central Perk waiter in the series, Gunther, attended the grand opening of the Dubai cafe, where he worked as a waiter.

As part of a museum exhibit at Warner Bros. Studios, Central Perk was rebuilt and shown on The Ellen DeGeneres Show in October 2008. Lisa Kudrow revisited the set for the first time after the series finale in 2004