Sitcoms have been a television staple for essentially as long as there have been television sets in most households. Everyone likes a laugh or two, and some would argue that humans may well need a laugh or two every now and then, given that old cliché of laughter being the best medicine and whatnot. And with sitcoms being a reliable and popular source of humorous entertainment (especially for viewers in need of a chuckle in the times before the internet), there have been plenty of great ones made over the decades.