Betty White. Love her and yes, she's tireless for animal rights. I think Rosie doing the Price is Right would be good for her and the audience. She needs to lighten up a little and find that core audience again. She can always go back to more activist work but I believe her audience will dwindle and burn out in the face of her constant soap box because of the underlying anger that often comes with it.
Life isn't about finding yourself, it's about creating yourself.