GOOFS.............!!!!!!!!!

• Continuity: As with any long-running show there are many inconsistencies between series. Characters' life histories, their birthdays and ages are reported differently from time to time as the writers invent new stuff for them that wasn't thought of when the series began.
  
  
• Continuity: With an average of 24 episodes per season of a show which ran for ten seasons there are, inevitably, many hundreds of minor continuity errors, with cups, hair and clothes inexplicably moving between shots - even people sometimes.
  
  
• Incorrectly regarded as goofs: Even the show's designer has commented on the fact that the Central Perk sign on the window can be read correctly from both inside and outside the coffee shop. But viewers have noticed that the logo is symmetrical and suggest that it isn't unfeasible for the owners to have placed a sign on the inside of the window which completely covers the one on the outside, making it readable from both sides.
  
  

• Factual errors: Joey is a regular on "Days of Our Lives" while living in New York. But "Days of Our Lives" is taped in Los Angeles.
  
  
• Continuity: In early seasons there are wood boards in Monica's apartment that go from the floor to the ceiling. In later seasons there are only wood boards by the fridge. In fact, certain directors for the show enjoyed putting their own mark on the episodes they directed. In the case of the visible wooden beam furthest "downstage" it was known as the mark of Kevin Bright, and would appear every time he directed an episode.
  
  
• Continuity: In earlier seasons, Chandler and Joey's apartment number is #4 while Monica and Rachel's is #5; in later seasons, the numbers change to #19 and #20.
  
  
• Errors made by characters (possibly deliberate errors by the filmmakers): In the pilot episode, the guy who Rachel left at the altar is called Barry Finkel. In all the other episodes his name is Barry Farber. He has also been called Barry White.
  
  
• Anachronisms: Ross' birthday changes several times during the show. For example, it goes from October 18th in the first episodes to December in the later episodes.
  
  
• Revealing mistakes: Several times throughout the series the cast can be seen with Safeway Select products, which are available in California where the show is taped but not in New York where the show takes place.