Cate Blanchett has likened Bob Dylan to an unidentified flying object - because the legendary rocker is so elusive. The Australian actress, who appears as the Like A Rolling Stone singer in new movie I'm Not There, has never met Dylan. Blanchett tells MTV, "He's a bit like a U.F.O. A lot of people have sightings." But at least, she'd know Dylan - if she was sitting next to him, unlike her brother-in-law, who once thought the folk-rock icon was a gardener. She adds, "My brother-in-law was at a party in Los Angeles in the '80s and was having a smoke with some guy, talking about horticulture, and after he left someone said, `How do you know Bob?' And he said, `I thought he was the gardener!'"