When reading a book, do you visualize real people?

Just finished the Seven Husbands of Evelyn Hugo (I know I know, I'm late to the party). And I just could. not. stop. visualizing Angelina Jolie as Evelyn, and Anderson Cooper as Harry.

Do you do this? When you read a book do you visualize a real person (famous or not), into a character?

For me it happens most with books that I can easily imagine becoming a movie or a tv series. I immediately 'cast' the story in my mind. Fun but it can be annoying too, especially if the author's descriptions don't line up with my own imagining.