Continuity mistake: Just after Rachel throws a bread roll at Joey, he turns to Chandler to speak to him. Chandler is holding his hands out in front of him. In the next shot, his right hand is touching his face, then in the next shot, it is lowered again. (00:02:55)Dwarf
Continuity mistake: In the scene where Ross and Carol are talking and Carol says that all he needs is to find a woman who likes men, a woman comes across the room walking in high heels. The shot is wrong because we see her up until she's half the way through the table, and the next shot shows her four steps back. (00:23:10)RonAshman
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.