2. The One with the Prom Video (Season 2, Episode 14)
There is a sense that Kaufman, Crane and Bright realised how much we loved dress-up Friends episodes after this one. Soon enough, we had The One with all the Thanksgivings, The One with the Flashback and The One that Could Have Been Part I/II. Admittedly, these episodes are often the reason there are chronological inconsistencies, but The One with the Prom Video is a stand-out moment. Ross’ moustache (“Misster Kotter”) and the first appearance of fat-Monica and original-nose Rachel are for the books, but the backstory between Rachel, Monica and Ross is front and centre – and the realisation for Rachel as to how long he has loved her. The fact that Ross is playing the keyboard only hints at another brilliant episode later (The One where Chandler Crosses the Line in Season 4) when he plays his “sound”.