Deliberate mistake: Richie was an infant in season one, and beginning with this season, he has been aged up to at least 3 years old while none of the other characters have aged up.
Deliberate mistake: When everyone is doing the Urkel Dance on the rooftop, Steve is instructing everyone on how the dance goes since they have never done it before, but there are sections of the dance where he is not telling them what to do, but it is still perfectly choreographed.
Continuity mistake: From the outside of the house, you can see the staircase and door are to the far left of the house. But from inside the house, you have a fireplace and the staircase to the right of the door. So you know it's not the same house they use in the show.
Carl: Go home! Go home! Go home!
Steve: I don't have to take this. I'm going home.
Trivia: Jaleel White broke and permanently disfigured his right-hand pinky finger while filming this episode.
Question: Is it true that the show's set was burned down? Either way, why was the show ended so suddenly (before Laura and Steve's wedding was even shown)?
Answer: It was just cancelled. Read more here: http://www.kellie.de/end.htm.
Myridon