'Saved by the Bell' fans took a trip down memory lane on Monday night during 'Dancing with the Stars: Most Memorable Year of My Life' episode. Elizabeth Berkley channeled her Jessie Spano alter-ego when she performed her famous "I'm So Excited" jive from a fan favorite scene in which Zack Morris finds her in the midst of a caffeine pill freakout... Check out the scene from the 1990 episode as well her DWTS perfmance below!