Corrected entry: Joey says to Ross 'Who's well educated now, Mr. I forgot 10 states?' But earlier on he has crossed out at least one when he asks Chandler why New England is not a state. Before he crossed it out he had 56, so when he said this to Ross he had less than 56.
Corrected entry: It's mentioned a number of times that Ross doesn't like ice cream. But in the episode where Ross spends time with Marcel when the monkey is in the movie, there is a scene in which Ross and Marcel are walking down the street and Ross has an ice cream cone. Marcel starts to eat it, and then Ross laughs and throws it away. Why would he care if the monkey licked his ice cream if he didn't like it to begin with?