VIDEO : Paul Rudd Says He Didn't Know How Famous Selena Gomez Was

Paul Rudd says he didn't have a clue how famous Selena Gomez was before working with her on the new film 'The Fundamentals of Caring.' Rudd says he realized just how big of a star Gomez was when thousands of people turned up during filming to try and catch a glimpse of her. He says he was very impressed with how she handled her level of celebrity, calling the 23-year old "extraordinary." The Fundamentals of Caring is a Netflix original movie that follows a washed-up writer on a road trip with a wheelchair bound teenager.