In this episode, Phoebe wears a That Girl (1966) t-shirt. The star of "That Girl" is Marlo Thomas, who plays Rachel's mom.
The uncut DVD version of the episode has a different ending. Monica and Ross decide to toss the Geller Cup down the garbage chute. Phoebe is at the bottom, catching it for Monica, but as she's about to leave, Ross walks in to claim it for himself. Also, in the uncut DVD version, when Phoebe asks Margha to set the timer, she calls Phoebe 'Beefy', and when Monica trades Joey for Rachel, she says "That's great, there goes my last shred of self esteem."
Susanna Midnight (credited as Susanna Voltaire) is the actress who plays "Margha". Beside all the confusions and arguments among the fans about her 'Dutch Accent', it was never cleared whether she was actually "Dutch" or from the Netherlands or not, due to the fact that neither the casting directors nor the members of the crew were aware of the fact that the actress was really from the United States, and does not have an accent. She added the fake accent to audition for the part of 'Margha'. Later when they found out she was American, the entire crew was shocked.
The park that the friends play football in was not filmed outside in a real park. It was actually a specially designed set, made for this episode, in a soundstage across from where the regular episodes are filmed.