This Sunday marks ET’s 30th trip down the Oscar red carpet, and we're going behind the scenes of Mary Hart's last Academy Awards promo!Walking down the red carpet alongside Mary are Mark Steines, Nancy O'Dell, Leonard Maltin and Cojo, ready to cover all the angles on Hollywood's biggest night, co-hosted by Anne Hathaway and James Franco.Filming on a chilly Thursday on Hollywood Boulevard in front of the Kodak Theatre, home to the 83rd Academy Awards, watch the video as the ET crew works together – from the producers and directors to the camera operators and artists that take care of the ET talent's hair and wardrobe. (ETonline.com)