Revealing mistake: When Ross comes back from asking out his neighbour at the counter, he has his hand open at one point, pointing down, but then apparently smashes the egg on Chandler. It's clear he never had the egg in his hand as there is no mess on Chandler's vest top either.
Visible crew/equipment: During the scene when Phoebe breaks into the other Phoebe's house and gets caught, the older Phoebe was telling the younger one that the man in the photo is not Frank Buffay, but is Chuck Mangioni. Right after that, as Phoebe 2 walks towards the camera, you can see that the door behind her moves open, and there is a visible shadow of someone who walks by that doorway. (00:19:00)Zyen Hoo
Question: When Ross and Rachel are fighting, Chandler hides behind the door and bursts out saying "I knew it." When Rachel says, "It's not that common, it doesn't happen to every guy and it is a big deal.", is this just a Chandler moment or is there another joke I have missed?