"The Simpsons"
Yes, we do know that the yellow family from Springfield is still on TV, but they still belong on this list, since they also put their stamp on the nineties, maybe like no other show. It all started in 1989, when the first episode premiered on FOX and there is no end in sight ever since. With 28 consecutive seasons and 618 episodes, it is the longest running prime time sitcom of all time.