Yep, out of all the sitcom's 236 episodes, there are a couple that reign supreme on IMDB, according to viewers watching at home.
Ranking top of the pile with a rating of 9.7 out of ten, is - perhaps unsurprisingly - the finale of the tenth and last season of the show, entitled The Last One: Part 2.
The episode first aired on 6th May 2004, and (spoiler alert) features Phoebe (Lisa Kudrow) racing Ross (David Schwimmer) to the airport to stop Rachel (Jennifer Aniston) getting on a plane to Paris.
In a sweet finale, Monica (Courteney Cox) and Chandler (Matthew Perry) also pack up their apartment for the final time before moving to their new house (sob).
Given the sentimental value of this episode, it's not hard to imagine why a lot of people ranked it so highly.
Coming in joint first place is an episode which is, suitably, bang in the middle of the ten seasons - and it's a big one: The One Where Everybody Finds Out.
This episode is somewhat of a turning point for the series, as it's when everyone clocks that Monica and Chandler are getting together.
Of course, they go on to marry and have children, so the unveiling of this fling is a pretty pivotal moment.
Throughout the episode, we see Phoebe and Rachel trying to get the pair to admit they're an item - queue Phoebe outrageously flirting with Chandler, and the revelation that he's "afraid of bras". LOL.
Ah, this really was a good'n.
On the other end of the spectrum, The One With The Invitation (season 4, episode 21) officially has the lowest rating of all Friends episodes.
This one features Ross's ex wife Emily Waltham, and centres around the moment Rachel is sent an invitation to Ross and Emily's wedding - much to his fiancé's fury.
Ross originally wasn't going to invite to his ex-girlfriend to the London nuptials, and Rachel felt mutually unenthusiastic about it, dreading the prospect of seeing him tie the knot with someone else.
But he eventually decides he can't leave Rachel out from his big day (queue a *hell* of a lot of flashbacks from Ross and Rachel's love story, as the pair both ponder what is the best thing to do...)
It's not hard to work out why people didn't love this episode, which was rated just 7.2 on IMDB - shy of the 8.5 average across all nine seasons.
Fans became incredibly invested in Ross and Rachel ahead of his marriage to Emily (played by Helen Baxendale), so, the thought of drawing a line under their romance once and for all was likely not appealing to many.
That being said, viewers need not have worried, seeing as Ross went on to say Rachel's name at the alter - a move which spells the beginning of the end for the him and Emily, and ultimately hints that he loves his best friend more than anyone else.
Given that the most popular Friends ep features Ross and Rachel very much in love again, it's safe to say the wedding invitation wasn't too much of a blip, after all.
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