After hearing that Billion Dollar Girl Miley Cyrus has added yet another name to her list of identities, we had to wonder how all this name-changing business is supposed to help an already-famous star's career. Cyrus, who was given the flashy title Destiny Hope Cyrus at birth, was nicknamed Smiley Miley as a kid by her achy breaky dad Billy and, guess what, it stuck. Now, AOL is reporting that Cyrus has officially changed her name to Miley Ray Cyrus, just like dad Billy Ray. But how have the most memorable mid-career name games fared when it comes to a celebrity's career? We took a look at a few of the most famous quick switches, and discovered it takes more than a flashy press announcement (and even a flashy new symbol) to inject a falling star with newfound fame...