By Nicola Fahey & Laura Armstrong Emily Blunt will have two special guests at the Oscars tonight – her mum and dad. The Oppenheimer star, who has been nominated for Best Actress in a Supporting Role, has invited her parents, Oliver and Joanna, to join her on the red carpet. And ahead of tonight’s ceremony, Emily credited her dad for kick-starting her career in a rather unusual way. Emily said: “My dad was always going to the video store to get really inappropriate films for all of us to watch. One of my first experiences was watching Jaws at the age of seven, and he would pitch that it was for…