As of 2017, it has been 20 years since:
-Brittany Spears's first album
-The time Mike Tyson nearly bit off a man's ear
-The debut of South Park and Teletubbies
-The release of the first Harry Potter book
-The premiere of the Adam Sandler film, Billy Madison and the Disney movie Hercules.
Additionally, these things also turn 20 this year:
-Austin Powers
-Bear in the Big Blue House
-Daria
-Buffy the Vampire Slayer
-Recess
-Pokémon
-King of the Hill
-Johnny Bravo
-The View
-Honey I Shrunk the Kids (TV Version)
-Cow and Chicken
-Captain Underpants
These things are turning 18 this year:
-SpongeBob
-Family Guy
-Futurama
-Muppets From Space
-Digimon
-Super Smash Bros.
-M.U.G.E.N.
-EverQuest
-Dragon Tales
-Happy Tree Friends
-Ed Edd n Eddy
-The Sopranos
-Zoboomafoo
-Kipper the dog
-Farscape
-Rocket Power
-Courage the Cowardly Dog
-Little Bill
-Law & Order:SVU
-Who Wants To Be a Millionaire
-Franklin the Turtle
-The Amanda Show
Wow! If Stewie and Cub from "Happy Tree Friends" were real people, they would both be legal adults now. I feel old!