I'm Paul Fucking McCartney...
(But I WISH I was George Harrison...)
xx SF
I'm probably a mix between John Lennon's eccentricity and George Harrison's calmness.
It's hard to tell accurately, never having met these people in real life. There's a big difference between a celebrity's real personality and the image that they project publicly. Some exuberant/outspoken celebrities are in reality great introverts: Jimi Hendrix and Marilyn Manson come to mind.
One of my friends worked in the television industry for some time, and told me that some public figures literally change their personalities when the cameras are rolling.