Harry Potter star Emma Watson had never heard of screen legends DAME Maggie Smith and Gary Oldman before working with them on the blockbuster movie franchise.
The actress, who plays Hermione Granger in the wizard films, grew up in an academic family and barely watched movies.
And she admits she failed to recognise most of her distinguished co-stars when she first stepped on set.
Watson says, "I didn't go to acting school so I didn't know that's what I wanted to be. I came from a background of lawyers and academics and we just didn't watch films in our household. I had no idea who Maggie Smith or Gary Oldman was."