The show debuted on NBC on August 20, 1989, after it was rebooted from a failed Disney series titled Good Morning, Miss Bliss.. It's the subject of the Lifetime movie The Unauthorized Saved by the Bell Story, which aired September 1, 2014. After reprising his role as Zack Morris on Saved by the Bell: The College Years and Wedding in Las Vegas, Mark-Paul Gosselaar appeared in NYPD Blue and Raising the Bar..