Many moons ago, marketing men struck upon a simple mathematical equation: their product + a celebrity face = lots of sales.
And so it has been ever since, with celebrities big and small lining up to smile, nod and generally extol the virtues of whatever car, clobber or cat food they can get their mucky paws on.
Of course like any type of relationship, these endorsements can sometimes go horribly wrong. What seems like a good match at the beginning ends up an embarrassing mistake. People laugh, or groan, and it takes a long time to live the decision down.
Even longer when we compile helpful lists like this one to jog your memory....