Full House: "Shape Up" (Season 4). Full House is known for having many episodes where a valuable lesson is learned. By the end of the episode, everything is back in order along with the same corny background music to put an emphasis on what we all learned. And in this episode, we learned: Starving yourself is bad. Its even worse when your snot-faced little sister is there to tattle on you. And you'll partially faint after using a StairMaster. (Really though people, don't starve yourself, food tastes so damn good.)
Best Line: "Doesn't anybody care about dental hygiene around here?!?"
Saved By The Bell: "Jessie's Song" (Season 2). Between midterms and the demands of her singing group, Jessie was really feeling the pressure. So she turns to...caffeine pills! Instead of passing out like DJ, she has a hyper-nervous breakdown in front of Zach (Mark-Paul Gosselaar) that has become the stuff of legend. Once YouTube started to take off, this was one of the first sitcom videos to go viral.
Best Line: "I'm so excited!...I'm SO EXCITED...I'M SO...scared."