Mary Lucy Denise "Marilu" Henner (born April 6, 1952) is an American actress, producer and author. She is best known for her role as Elaine O'Connor Nardo on the sitcom Taxi from 1978 to 1983. In Two and a Half Men, she played the character of Linda, Walden's girlfriend, in the season 10 finale "Cows, Prepare to be Tipped".