Nickelodeon's You Can't Do That on Television This is the oldest show on the list (it originally aired from 1979-1990) and arguably the most iconic. One of Nickelodeon’s first sketch comedies for teens, YCDTOT featured a large cast of teenagers performing now (in)famous sketches, including a firing squad skit with an incompetent officer who could never quite finish his execution orders until he himself was in the line of fire, and locker jokes, a bit where the teen stars of the show all hid inside their lockers and poked their heads out so they could tell each other ridiculous one-liners.
The show was full of oddball humor, and it gave Canadian superstar Alanis Morissette her start in showbiz (she appeared in five episodes in the mid '80s). YCDTOT also gave birth to a certain slimy substance that has since made its way into the pop culture zeitgeist. When it comes to getting buckets of green sludge dumped on your head, this is the show that started it all. Whenever anyone on the show said the words “I don’t know,” chartreuse-colored slime fell onto their heads from an unknown source above. The show’s stars were also doused with a few gallons of H2O whenever anyone said the word “water” out loud, making this the show many remember for its perpetual drenching of its stars.