5. Screech, Saved by the Bell, Saved by the Bell the New Class
A squeaky, obnoxious, “nerdy best buddy” that made even Steve Urkel seem positively tolerable, Screech was the bane of 90s television. It doesn’t exactly help that the actor who played Screech, Dustin Diamond, went on to become a real-life adult jerk of epic proportions. Between his SBTB-negative auto-biography and a laughable sex tape, we’ve seen and heard more from Screech than anyone will ever be comfortable with.