Star

Bradley Cooper & Leonardo DiCaprio? "Bradley Cooper is getting a lesson in no-strings-attached hookups from Hollywood's ultimate bachelor, Leonardo DiCaprio! The guys [both are 38 years old] got to know each other during awards season, and Leo took Bradley under his wing. Bradley was moaning about finding Mrs. Right. But Leo told him to chill out and enjoy all the beautiful women. Leo, who has romanced a string of catwalkers, explained his master plan to the Silver Linings Playbook hunk." Leo says, "He's going to date as many supermodels as possible before he's 40, then he'll settle down with a good woman." Ohhh, good for yoooou! "Bradley's been following his pal's advice — good times with no committment."

Some stars are happy to show their faces in commercials, lending their celebrity to endorse the products they truly believe in, as Tina Fey is doing with that Garnier Nutrisse hair dye, or Matthew Broderick did with his Super Bowl riff on Ferris Bueller for Honda. Others try to keep a lid on their shilling by doing it only overseas. A third class is prepared to do TV ads — if all you hear is a disembodied voice. But if a celebrity's not willing to show her face in support of a brand, can we REALLY believe it has her full endorsement? Here we've collected a list of stars who've provided voice-overs in commercials, considered what their work tells us about the products they've promoted — and, for good measure, ranked them according to how likely they are actually to make use of them, from most likely to least likely.