Sitcoms arguably aren't what they used to be. While there are some great new ones, many sitcoms today rely on inspiration from ones that came before them. Some of them are even outright copies, spinoffs, or sequels. There have been some near-perfect sitcoms that changed the game and inspired others, like Friends and Seinfeld. But there are also forgotten ones that, rather than make a mark, have fallen into obscurity despite being so good, and likely used as references for shows we see today.