Can you imagine Saved by the Bell without the evenly gender-divided cast? Without Jessie Spano and the Type-A flavor she added to the group, her winning banter with Slater, and, most importantly, no 'caffeine pills' episode? In the show's original pilot script, Jessie didn't exist, but Elizabeth Berkley impressed Peter Engel and his team so much in an audition for Kelly that he created the character so both she and Tiffani-Amber Thiessen could come aboard.