Not just my favorite Friends episode but my favorite sit-com episode of all time. The end of the episode, as Chandler leaves, is just brilliant. And Ross and Phoebe's argument is classic. Monica in front of the TV magnifier-hilarious. On and on. As much as I love the actors, the writing really made Friends the show it became. This episode is the epitome of that writing--sad, funny, thought-provoking, touching, it is all there.