If you go about 10 minutes into the episode you'll come to the part where Rachel realizes that she's still in love with Ross. Once Phoebe sits down keep an eye on her long necklace. It keeps moving. And not just a little, a lot. It'll show her with the necklace off to one side of her chest, cuts to Rachel, then cuts back to Phoebe and her necklace is in a totally different place. It does this so much it's really funny.