Alan Arkin, Little Miss Sunshine (2006)

Codger Cred: Grouse-happy, s**t-stirring malcontent Edwin lives to complain, moan and insult most of his family, though he loves his grandkids (even if he doesn’t understand the sulky side of Paul Dano’s Dwayne).

He’s unrepentantly sweary too, which we love.

Grouchy Gust: “You're not gonna shut me up! F**k you I can say what I want!"

Cheer Up! Grandpa has a heart of gold beating under that spiky exterior, and truly bonds with granddaughter Olive (Abigail Breslin) as she struggles to enter a beauty contest.