The funny formula: Family Christmases, unrequited love, odd couples

The funny formula: Family Christmases, unrequited love, odd couples… sitcoms can find humour in the funniest places, as a new TV show reveals

Best buddies: The secret to a good sitcom is believable characters, and Men Behaving Badly

Best buddies: The secret to a good sitcom is believable characters, and Men Behaving Badly”s Tony and Gary ticked all the boxes

Addictive watch: Porridge cellmates Fletch (Ronnie Barker, pictured) and Godber also had great chemistry

Addictive watch: Porridge cellmates Fletch (Ronnie Barker, pictured) and Godber also had great chemistry

True love: Who can forget the on-going frisson of tension between Penelope Keiths Audrey Fforbes-Hamilton, forced to sell her family estate to supermarket owner Richard DeVere in To The Manor Born

True love: Who can forget the on-going frisson of tension between Penelope Keiths Audrey Fforbes-Hamilton, forced to sell her family estate to supermarket owner Richard DeVere in To The Manor Born

Perfect combination: Outnumber

Perfect combination: Outnumber”s Hugh Dennis says the family sitcoms that do the best do so because they provide the viewer with plenty to relate to

Royle family: Sitcom festivities provide endless opportunities for faux pas

Royle family: Sitcom festivities provide endless opportunities for faux pas