It's no secret that the gold mine of great film and television was in the 1980s and 1990s. Sitcoms such as "Friends," and "Full House" are recognized and praised by many, but what about some other sitcoms that some millennials might not know about?

Here are four hilarious sitcoms that every millennial might be missing out on.

1. "Three's Company"

Come and knock on their door!

Join Janet, Jack and Chrissy in this late '70s sitcom.

Jack Tripper lives with Chrissy and Janet, but there's only one catch — Jack is pretending to be gay so he can be allowed to live with his lady roommates!

It's a great show that you don't want to miss out on.

2. "The Facts Of Life"

"You take the good, you take the bad, you take them both and you have the facts of life."

In this '80s sitcom, a group of four girls attend a boarding school and learn about the importance of friendship along with life lessons.

It will make you laugh and warm your heart all at once.

3. "Mama's Family"

"Mama's Family" is a comical sitcom about mama's family...

Thelma Harper's son, Victor, gets a divorce and he moves his teenage son and daughter into his mother's house.

This is a great show for anyone to watch!

4. "ALF"

Join the cutest fuzzy alien, Alf, as he lives with the Tanner family after he crashed their garage!