I've seen other lists, and I hate to say it but I was surprised by some of the actors or actresses, maybe because of the stereotypical assumption that because of the roles they play, they couldn't possibly be so smart, or because of their actions or the celeb image, they couldn't possible be so smart. However, I realize this is based on a misguided assumption that it's the IQ that makes the person, not what they do with it. Yes, I used to be highly impressed with many of them until I realize it was giving high praise to people for something they couldn't control or decide for themselves. It's like giving someone credit for being naturally athletic or attractive. It's just who they are, not what they do. I'm more impressed by the decisions they make and how they use their smarts to contribute something to a better understanding of the world than simply heaping admiration on them for having a high IQ.
FYI, Arnold Schwarzenegger has a supposed IQ in the 140s, and many think he is one of the least intelligent celebs in Hollywood. Go figure.