1.  "Saved By the Bell" was almost called "When the Bell Rings"

2.  Dustin Diamond was only 12 when he was cast for the role of Screech.  The show's creator didn't realize he was so young and wouldn't have cast him had he known.

3.  Zack and Screech are the only two characters to appear in EVERY single episode.

4.  Lisa and Slater are the only main characters that never dated.

5.  We've never once seen the outside of their school.

If you're feeling nostalgic - Netflix has the entire series available to stream right now.  By the way, Lifetime created a movie based on what happened behind the scenes on the show.  It's called, "Saved By the Bell: The Unauthorized Story", and it premieres on Labor Day.