Tempora mutantur, nos et mutamur in illis - times change and we change with them as the ancient said, but is it true when it comes to comedy?

Yes, exactly five characters that you have been watching in every sitcom but never realized that. You might think there were dozens or hundreds of characters in American sitcoms, but actually there were only five the whole time.

Learn about the conspiracy theory behind Danny DeVitos character Louie De Palma from Taxi.