Top episode: The One With Unagi
When Rachel and Phoebe take a self-defense class, Ross decides to teach them a method of staying alert taken from karate - which he hilariously pronounces ka-ra-tay. He says it's called 'unagi'.
Unfortunately, this is actually a Japanese delicacy - leading Rachel to shout "Ah … salmon skin roll", all the time much to his annoyance.
Catchphrases were a staple of the show - "How you doin'?" or "Oh. My. God" spring to mind.
Top episode: The One With the Prom Video
A throwback home video of Rachel and Monica's prom, complete with comedy 'tache, reveals how long Ross has loved Rachel and she strides across the apartment and plants a huge kiss on him.
Top episode: The One With the Rumor
Brad Pitt makes an appearance in this one - that's pretty much all you need to know.
Cameos by well-known faces were one of the treats of the show, which also featured Bruce Willis, Julia Roberts, Elle Macpherson and George Clooney but this was obviously one of the most popular.
Brad, then married to Jen, played an old school colleague who confessed that he co-founded the 'We hate Rachel Club' because he hated her back in the day.
Top episode: The One With Phoebe's wedding
A snow storm scuppered Phoebe's plans for her wedding to Mike, played by Paul Rudd. The gang got together to hold the ceremony on the street outside amid the snow flakes.